问题

Do the Smiths live next door to you?—No, but they _________.
A:used to
B:used to do
C:are used to
D:used to be
B:used to do
C:are used to
D:used to be
正确答案是:
同类题型
My mother often tells me to study hard. She says hard work _____ success.
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There are many volunteers _________ are helping the children in Sichuan.
This kind of dumplings is special in our restaurant. It is 6 yuan_______ January 12.[ ]