根据所给的句子填入适当的介词

His parents have been ill and he has to look ________ them．

根据所给的句子填入适当的介词

It’s important ________ him to work on their farm because there are seven people in Liu’s family and they are very poor．

根据所给的句子填入适当的介词

His parents want him to drop out ________ school．

动词应用

We can’t go b ________ that point．

动词应用

A thousand million is a b________．

动词应用

It is impolite to ask a woman’s age because it’s a s________．

动词应用

Shenzhou VI is an u________spacecraft, isn’t it?

动词应用

Have you heard from your aunt r________?

Who can tell me ________ at the meeting?

A．what he said

B．he said what

C．what did he say

D．bow he said

I want to know ________ do to help my neighbour．

A．what I can

B．what can I

C．how I can

D．how can I