Afterallofusfinishedourhomework,theteachertoldus

問題詳情：

After all of us finished our homework, the teacher told us _________at once.

   A. to hand it in B. to hand them in  C. to hand them out D. hand it out

【回答】

A 

知識點：動詞和動詞短語

題型：選擇題