—Tom,haveyoufinishedyourcomposition?   —Half      when...

問題詳情：

 — Tom, have you finished your composition?   

— Half       when you come back．

A. has been done       B. is done             C. be done           D. will have been done

【回答】

D

知識點：虛擬語氣與情態動詞

題型：選擇題