问题

We _ in this pool when we were young, butnow it _ fish.

A:are used toswim; used to keep
B:are used toswimming; used to keep
C:used toswimming; is used to keep
D:used to swim;is used for keeping

正确答案是：

同类题型

Let’s buy a birthday cake ________ hisbirthday present ________ the cake shop.

By talking with them，I get to know ________ Russian people see their country and the US.

Though he was badly hurt, he kept ______ other passengers.

Jack told us that his class ________ sixty-four students.

We should spend the money ______ something _____ everyone