题目内容
动词填空
用括号内所给动词的适当形式填空。
-I called you just now.
-Sorry, I didn't hear it.I________(mop)up the floor.
答案:was mopping
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题目内容
动词填空
用括号内所给动词的适当形式填空。
-I called you just now.
-Sorry, I didn't hear it.I________(mop)up the floor.