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.
