问题

“Isn’t it about time you _____ to do morning exercises？” “Yes, it is. Would you like to join us？”

A:begin
B:have begun
C:began
D:had begun

正确答案是：

同类题型

下列各句中，加线成语使用恰当的一项是（）

I can’t find my watch. But it must be _____ in this room.

Was the suspect seen ________ that young womanin the street at that time —Yes. The victim _________ a lot.

“You can’t catch me!” Monica shouted, _____ to the playground.[ ]

If you don’t go to the party, ______I