Do you know a concert in our hometown next month?A. will be heldB. is going to be heldC.

问题补充：

Do you know a concert in our hometown next month?

A. will be held

B. is going to be held

C. is to be held

D. all A, B, C

答案：

A. will be held

B. is going to be held

C. is to be held

(答案→)D. all A, B, C

解析：考查时态。根据next month可知，一个使用一般将来时，一般将来时的构成有：will+动词原形，be going to+动词原形，be to+动词原形，be about to+动词原形等，由此可见，A、B、C三项都可以，故选D。