句型轉(zhuǎn)換：1.You must wait and open it later.（改為祈使句） ___ ___ ___it later!
2.I'll do my best to finish my homework.（改為同義句）
I'll ___ ___ ___ to finish my homework.
3.Both of them konw the answer.（改為否定句）
___ ___ them ___ the answer.
4.We must tell him the answer.（對畫線部分提問）
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___ ___ we ___?