You will have to wait for one more week when the manager back from his trip.A. will beB.

问题补充：

You will have to wait for one more week, when the manager back from his trip.

A. will be

B. comes

C. is going to be

D. is

答案：

(答案→)A. will be

B. comes

C. is going to be

D. is

解析：考查时态。句意：考虑到经理要旅行归来，你不得不在多等一个星期。Be going to表示计划打算发生的动作，will表示自然发生的事情，结合语境可知经理的归来是自然发生的动作，故选A。