题目内容
根据句意用括号中所给动词的适当形式填空。
It was 12 o'clock at night.Professor Li ________ still ________(work)in the lab.
答案:was,working
练习册系列答案
相关题目
题目内容
根据句意用括号中所给动词的适当形式填空。
It was 12 o'clock at night.Professor Li ________ still ________(work)in the lab.