where.be living?A.they B.they will C.will they D.are they请帮我找出正确答案和原因

问题描述:

where.be living?A.they B.they will C.will they D.are they
请帮我找出正确答案和原因

C
where表疑问,所以will要提前,will be doing是未来进行时