问题

Not until he left his home _____ to know how important the family was for him.[ ]

A: did he begin
B:egun
C: he began
D: he had begun

正确答案是：

同类题型

She couldn’t decide which restaurant _______.[ ]

一Are you going to Guilin by plane 一It’s fast but expensive, so I’m not sure．I ________ take a train．

life will continue on the earth for millions of years to come will depend onthe problem of pollution can be solved

There is a new problem ________ in the popularity of private cars that road conditions need improving [ ]

He can’t play soccer__________,__________ he practices it every day.