Q: I'll spend what I must to see her happy. とはどういう意味ですか?
A: = You'll spend the needed amount of money to make her happy.

= You'll spare no expenses to see her happy.

= Money has no value compared to her happiness, so you'll spend however much it takes to make her happy.
Q: I've spent working.

A: You must mention a period of time when using "spent" and "any other verb" together.
You can't just say: I have spent studying, but rather: I have spent five years studying in London.
The full sentence you wrote included "the fifth consecutive week" as a period of time, which means: I have spent five consecutive weeks working.
You could also say: The five years that I spent studying in London were awesome, which means: the five years spent in London were awesome.
Q: spend とはどういう意味ですか?
A: with money / possessions it means to give out and then receive a product in return.

it can also mean to do something like when you say "I spend time with my mother" you're saying that you did something with your mother for a period of time.
Q: spend とはどういう意味ですか?
A: To spend = gastar
"I spend a lot of money" = "Gasto mucho dinero".
Q: below typical / spent so far とはどういう意味ですか?
A: @Dotori: below typical can mean below the normal range (below the norm)
spent so far in money is how much you have spent to the present time


Q: best spent を使った例文を教えて下さい。
A: A student's time is best spent studying.
Q: "spend" and "spent" to distinguish them を使った例文を教えて下さい。
A: You spend too much money on clothes!
I spent $50 on food the other day
If you spend a night in jail, maybe you’ll reflect on your actions!
I spent all day studying and still failed the test.
After hiking 20 miles, she was totally spent and went right to sleep
Q: spend and spent を使った例文を教えて下さい。
A: Spend can be used as in “I spend a lot of money” it is saying like you do this regularly.
Spent can be used as in “I spent a lot of money last month” where it is like a specific time ago. Spent is also the past tense form of spend, so there aren’t really differences, but I gave the example sentences, if you can understand them!
Q: spend を使った例文を教えて下さい。
A: I love to spend time with my friends.
I spend too much time at work.
I make sure I spend more time on math than I do drawing.
Q: spend を使った例文を教えて下さい。
A: I spent (past) my last holiday in Germany


Q: spendspent はどう違いますか?
A: "Spent" is the past tense as well as the past participle form of "spend".

On average I spend $100 a day.
Yesterday I spent $100.
So far today I've spent $50.
Q: spend と cost はどう違いますか?
A: Cost is how much an item is worth and spend is how much you pay for the item.
Q: spend と cost はどう違いますか?
A: spend - when you gonna spend money on some item.
cost - the price, amount of money you have to pay for an item.

This shirt costs too much. (is too expensive)
I have to spend some money on food.
Q: spend と last はどう違いますか?
A: Spend: how long it took (to do it)
Last: how long it remained/worked/ "duró" (something)
Q: spend と waste はどう違いますか?
A: Spend es gastar y waste es malgastar.


Q: spend は 英語 (アメリカ) で何と言いますか?
A: QAの全文をご確認ください
Q: spent は 英語 (アメリカ) で何と言いますか?
Q: spend は 英語 (アメリカ) で何と言いますか?
A: QAの全文をご確認ください
Q: spent は 英語 (アメリカ) で何と言いますか?
Q: spend は 英語 (アメリカ) で何と言いますか?
A: QAの全文をご確認ください


Q: I spend at least 20minutes to study Japanese
everyday,sometimes I study more than 20minutes. この表現は自然ですか?
A: × I spend at least 20minutes to study Japanese
✓ I spend at least 20 minutes studying Japanese everyday.

× everyday,sometimes I study more than 20minutes.
✓ Sometimes, I even study more than 20 minutes.

Q: I spend... この表現は自然ですか?
A: Very nice! Your pronunciation is so good. Congratulations!
Q: I should spend... この表現は自然ですか?
A: Awesome! the last part is a little unclear, but your pronunciation is really good. ^^
Q: He spends... この表現は自然ですか?
A: he spends 3 years trying to recall his own past. "i don't know who i am," he says, "i don't know where i'm going, none of it."

Q: I spent a great weekends​. この表現は自然ですか?
A: ''I spent a nice weekend in (X)''

or if you spent multiple weekends

''I spent a great few weekends in (X)''