He has poor eyesight he works on the computer at night.A. becauseB. because ofC. andD. bu

问题补充：

He has poor eyesight he works on the computer at night.

A. because

B. because of

C. and

D. but

答案：

(答案→)A. because

B. because of

C. and

D. but

解析：本题需要的是一个连词，因此将B排除，再根据意思来选择A