题目

1.Hello!May I speak to Bob?-Sorry,but he _____ for a month.
A.had been away B.was left C.left D.has been away
2.I ______ him since I began to live in the city,
A.know B.have known C.knew D,will konw
3.She _____ already ______ in this school for two years.
A.was;studying B.will;study C.has;studied D.are;studying
4._____ he came to study in the university.he has made much progress.
A.While B.When C.Since D.After

提问时间：2020-11-05

答案

1.D 看到for就是典型的现在完成时代表,然后因为left是点动词,所以不能用于完成时.2.B since表示现在完成时3.C already意思是已经,句子中又有for,要用现在完成时4.C he has made much progress这句话运用了现在完成时...