用括号内动词的适当形式填空。 I knew Sarah was busy, so I _____ (not/disturb)her.
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用括号内动词的适当形式填空。 We were very tired, so we_____(leave) the party early.
用括号内动词的适当形式填空。 It was hard carrying the bags. They________(be)very heavy.
用括号内动词的适当形式填空。 Yesterday the window _____ (be) open and a bird ______(fly) in.
用括号内动词的适当形式填空。 Last month we stayed at a hotel. The hotel _____(not/be) very expensive and it ________(not/cost)much to stay.