We must ______ known to all that smoking is harmful to heart

_____ is known to us all _____ Lu Xun is famous for his great works_____ a great writer.

A：It; that; for

B：It; that; as

C：As; / ; for

D：As; that; as

We also had different students in some classes, so ______was a struggle to remember all the faces.

A：it

B：this

C：that

D：one

---Susan, go and join your sister cleaning the yard.--- Why ___? John is sitting there doing nothing.  

A：him

B：he

C：I

D：me

Is that person honest? I find _____ hard to believe what he said.

A：one

B：it

C：him

D：that

According to the weather forecast, it will be _____weather that we had better stay at home.

A：such a bad

B：such bad

C：so bad a

D：so bad

I"ve achieved a lot in my study, thanks to ____ who helped me.

A：others

B：those

C：ones

D：these

Home milk delivery has almost disappeared in China now, and gone with____        are milkmen.

A：which

B：it

C：what

D：them

Why don’t you bring _____to his attention that you are too busy to do it?

A：it

B：this

C：that

D：what

I was disappointed with the film. I had expected _______ to be much better.

A：that

B：this

C：one

D：it

. I agree with most of what you said, but I don’t agree with            .

A：anything

B：something

C：everything

D：nothing