--- May I a pair of pants?--- Of course.A. has B. have C. having
—Linda, I called you this morning, but nobody answered the phone.—I'm sorry. I football with my friends then.
I told Tony the exciting news__________ he came back home last night.
---- It’s very important for everyone to exercise. do you exercise?----Three or four times a week.
---- Is that girl Susan?---- It ______ be her. She left for Beijing yesterday.
----Shall we go to the amusement park this Sunday, mum?---- Sure, ________ I am busy.