4.2 课时作业
Ⅰ.用动词的正确形式填空
1．All these years they ________ (contribute) articles to our magazine.
2．I ________ (drink) five cups of coffee this afternoon.
3．It's a long time since you ________ (come) to see me.
4．You know, I ________ (look) for a job for three months, and this is my first formal interview.
5．My sister ________ (stay) in Beijing for three months last year.
6．The little boy is dirty all over because he ________ (play) in the mud all the morning.
7．I ________ (wonder) if you were free this afternoon.
8．Here he is! We ________ (wait) anxiously for him since last night.
9．Excuse me, Marcia, a reporter from Vanity Fair ________ (phone) all day. Could you speak to her now?
10．We ________ (build) the bridge for over two years and it will be half a year before it's completed.
11．—Isn't it hard to drive downtown to work?
—Yes，that's why I ________ (go) to work by subway.
12．She ________ (work) on this essay for 20 minutes but she has written only about a hundred words.
答案：1.have been contributing 2.have drunk 3.came
4．have been looking 5.stayed 6.has been playing/has played 7.wondered 8. have been waiting 9.has been phoning 10.have been building 11.have been going 12.has been working
Ⅱ.单句改错
1．By the time you arrive in London, we have been staying in Europe for two weeks.
________________________________________________________________________
