问题

Never before in China _______ for the unemployed.

A:has done so much
B:een done so much
C:so much has been done　
D:has so much been done

正确答案是：

同类题型

I’m going to ______ a new hobby. I want to learn how to take photos.

_______is the population____the USA

What would you like _______—Sorry, I don’t feel like _______.

ok very tired. —Well, __________my lessons all theafternoon.

Gong Li won an Oscar______ Best Actress ______ her role in this film.