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 has begun

正确答案是：

同类题型

Where _______?—I got caught in the traffic, or I would have been here sooner.

Thank you ___________ your English book. — ____________.

You can hardly imagine the trouble the woman had ________ her children. [ ]

Is your uncle going to Beijing on _____ train —No, He is going there by______ plane.

_________ since we last saw our primary school classmates.