You must stop playing computer games if you want to imporve

題目：

You must stop playing computer games if you want to imporve your studies.同義句
You must _______ ________playing computer games if you want to imporve your studies.
You can only choose one out of the two shirts.
Please take _______ this shirt ___ that one.

解答：

1.give up 放棄
2.either/or 要麼……要麼……