1.By the time I _____ back they ____ up ten satellites.

1.By the time I _____ back they ____ up ten satellites.
A.came…have sent B.came…had sent C.come…have sent D.had come…sent
2.Jack ____ over five lessons by seven o’clock.Then he ____ a rest.
A.went…took B.went…had taken C.had gone…took D.had gone…had taken
3.We ____ out by that time that he ____ a spy for a long time.
A.had found…had been B.had found…was C.found…had been D.found…was
4.Before the news ____ him,he ____ to know about it.
A.reaches…has got B.reached…had got C.reached…got D.had reached…got
5.I _____ him a second letter before I ____ from him.
A.wrote…heard B.wrote…had heard
C.had written…heard D.have written…hear
6.People ____ that the soldiers _____ fighting.
A.say…had stopped B.said…has stopped C.say…stopped D.said…had stopped
7.We ____ in a good harvest because we ____ enough rain.
A.didn’t get…had had B.got…had had C.had got…had had D.got…hadn’t had
8.According to the time table,the train for London ___ at seven o'clock in the evening.
A.was leaving B.has left C.leaves D.will leave
9.You should visit this part of the country when ___
A.spring will come B.spring comes
C.It has been spring D.It will be spring
10.You needn't hurry her.She ___ it by the time you are ready.
A.will have been finishing B.Would finish
C.Will have finished D.Will be finishing
11.We can go home when the ground ___
A.is drying B.has dried C.dried D.will dry
12.Obviously,he ___ a bad cold.He sneezes so often.
A .has B.has been C.had D.was