问题

Answer the doorbell, please. It must be your uncle. —It Heidi. She’s coming over this morning to help me with my math.

A:is
B:can’t be
C:could be
D:will be

正确答案是：

同类题型

What do you think made Mary so upset?——– _________her new bicycle.

Can you tell me ________?

Your coat is very nice.—_________________

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________ the boy didn’t take medicine madehis mother angry.