用所给动词的适当形式填空 -What do you think that noise was? -It might (be)a cat.
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用所给动词的适当形式填空
-What do you think that noise was?
-It might ________(be)a cat.
试题答案
答案:have been

用所给动词的适当形式填空
-What do you think that noise was?
-It might ________(be)a cat.
答案:have been