I believe that he us as soon as he comes back to China.A. callB. to callC. will callD. ca

问题补充：

I believe that he us as soon as he comes back to China.

A. call

B. to call

C. will call

D. calls

答案：

A. call

B. to call

(答案→)C. will call

D. calls

解析：句意：我相信只要一回到中国，他就会打电话给我们。由语题干可知，时间状语从句用一般现在时，主句用一般将来时，因此选C。

考点: 考查动词时态的用法。