问题
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:will he come ; he comes
C:does he come ; he will come
D:does he come ; he comes
正确答案是：
