Ever since my brother graduated from the university, he _______ in the present c
题型：同步题难度：来源：
| Ever since my brother graduated from the university, he _______ in the present company for 15 years and he is now chief engineer of the company. |
A. worked
B. has been working
C. is working
D. works |
答案
举一反三
| In the past decades, sea ice ____ in the Arctic as a result of global warming. |
| [ ] |
A. had melted
B. has been melting
C. melted
D. is melting |
| Tom ________ in the library every night over the last three months． |
| [ ] |
A．works
B．worked
C．has been working
D．had been working |
| The development of China"s economy ________ since the 80s of last century. |
| [ ] |
A. has been accelerating
B. had accelerated
C.is accelerating
D. accelerated |
| The company a rise in salary for ages but nothing has happened yet. |
| [ ] |
A.has been promising
B.had promised
C.promised
D.promises |
-I"m sure Andrew will win the first prize in the final.
-I think so. He________for it for months． |
| [ ] |
A. is preparing
B.was preparing
C. had been preparing
D.has been preparing |
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