______ would have been too embarrassed, but he walked right

As a journalist, Joan finds _______ worthwhile to spend time chatting with people of different backgrounds and nationalities.

A：one

B：that

C：her

D：it

My father promised to buy me a nice present for the Christmas,2012,      beyond my imagination.   

A：which

B：that

C：the one

D：something

Tom’s mother kept telling him that he should work harder, but ______ didn’t help.

A：he

B：it

C：she

D：which

We should learn from those _____ are always ready to help others.

A：who

B：whom

C：they

D：that

---Have you got used to the Chinese food, Robert?----Yes, but I don’t like ______ when a Chinese host keeps serving me the food I don’t like.   

A：this

B：that

C：those

D：it

Last week, only two people came to look at the house, ____ planning to buy it.

A：neither of them

B：none of them

C：none of whom

D：neither of whom

— Did a letter come for me this morning?— Yes. _____ came for you.

A：That

B：It

C：One

D：The letter

I would appreciate ____ if you could pick me up at the airport tomorrow morning.

A：it

B：/

C：that

D：this

I remember a ____ famous scientist said that we should believe in ourselves first of all.

A：some

B：certain

C：sure

D：other

Go and join in the party. Leave______ to me to do the washing-up.

A：it

B：that

C：this

D：one