( ) 6. What ______ they doing then on the hill?

A. are B. were C. is D. was

( ) 7. He ________ his homework this time yesterday.

A. does B. was doing C. is doing D. is

( ) 8. The letter _______ a week ago and it______ yesterday.

A. posted; arrived B. was posted; arrived

C. is posted; arrived D. has posted; has arrived

( ) 9.They ________ friends since they met in Shanghai.

A. have made B. have become

C. have been D. have turned

( ) 10. The workers __________ many toys in the factory last year.

A. invent B. invented C. invention D. inventing

( ) 11. Neither you nor he ________ New York city.

A. has gone to B. have gone to

C. have been to D. has been to

( ) 12. ---I hear your father ____ to Japan once.

---Yes, he_______ there last year.

A. went, has been B. has gone, went

C. has been, went D. had gone, has been

( ) 13. I got up very late this morning. There _______ no time to have breakfast.

A. had B. has C. was D. is

( ) 14. So far we ________ the moon.

A. gets to B. arrived C. have reached D. have arrived

( ) 15. I _______ for them at the school gate ______ it began to rain.

A. didn’t wait, until B. didn’t wait, when

C. waited, until D. waited, because

( ) 16. What does the sentence “ Don’t trouble till trouble _____ you.” mean?

A. trouble B. troubles C. will trouble D. troubled

( ) 17. Two-thirds of the work __________ by the computer last week.

A. are done B. is done C. were done D. was done

( ) 18. He ________ his bag in the library this morning.

A. forgot B. lost C. had left D. left

( ) 19. My brother ______ while he _______ his bicycle and hurt himself.

A. fell, was riding B. fell, were riding

C. had fallen, rode D. had fallen, was riding

( ) 20. Everyone except Tom and Johnny ____ there when the meeting began.

A. is B. was C. are D. were

( ) 21. Be quiet! Your father ________.

A. sleeps B. sleeping C. is thinking D. was working.