Mary ______ her homework when her mother got home yesterday.
A. does B. did C. is doing D. was doing
I often ______ my grandparents at weekends.
A. visit B. visited C. will visit D. have visited
–______ did you pay for the CD?
– Only 10 dollars.
A. How many B. How much C. How long D. How often
I knew______ about the car accident because I was in the library at that time.
A. something B. anything C. nothing D. everything
I think Lesson Five is ______ of the three lessons.
A. difficult B. more difficult
C. most difficult D. the most difficult
My bike was broken on the way，______ I was late for school.
A. but B. for C. or D. so
