Ithinkisnecessaryustodosomethi

I think ______ is necessary ______ us to do something useful to protect the birds.

A．this; for

B．it; of

C．this; of

D．it; for

登录免费查看答案和解析

相关试题

His father had an important meeting just now, _______?

A．did he	B．had he
C．didn't he	D．hadn't he

收藏答案/解析

-_______ can the batteries (电池) keep these cool iPhones and iPads working?
- For about ten hours.

A．How much	B．How many
C．How long	D．How often

收藏答案/解析

- Have you heard that six people killed a young woman in McDonald's in Shangdong?
-_______ bad the news is.

A．What a	B．How
C．How a	D．What

收藏答案/解析

The careless boy lost his key, _______ he had to wait for his mom in the cold.

A．and	B．or
C．for	D．so

收藏答案/解析

Your sister isn't at home. Can you help her_______ her baby?

A．look out	B．look after
C．look around	D．look for

收藏答案/解析