—Hasyourfriendcompletedhisdesign?—Notyet.He
練習題3.37W
問題詳情:
—Has your friend completed his design?
—Not yet. He _______ on it last night.
A. worked B. has worked C. is working D. was working
【回答】
D
知識點:動詞時態
題型:選擇題
標籤:
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