問題詳情:
---Bob, You ______ have posted those letters.
---Sorry. I forgot it.
A. can B. should C. must D. may
【回答】
B情態動詞。forgot提示此處爲should+完成時,表示過去本該做某事而沒做。
知識點:虛擬語氣與情態動詞
題型:選擇題
問題詳情:
---Bob, You ______ have posted those letters.
---Sorry. I forgot it.
A. can B. should C. must D. may
【回答】
B情態動詞。forgot提示此處爲should+完成時,表示過去本該做某事而沒做。
知識點:虛擬語氣與情態動詞
題型:選擇題