---When ______ and visit our exhibition next month ?

       -- -When _______ , I will let you know .

        A. will he come ; he will come               B. will he come ; he comes

        C. does he come ; he will come               D. does he come ; he comes

B


解析:

第一句中的時(shí)間狀語next month確定了這句的一般將來時(shí)的時(shí)態(tài)，然而第二句是由when引導(dǎo)的時(shí)間狀語從句，在時(shí)間狀語從句中只能用一般現(xiàn)在時(shí)表示的是一般將來時(shí)。

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