We should learn from those _____ are always ready to help ot

---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

We have two kinds of summer camps for your holidays. You can choose ______ based on your own interests.

A：either

B：each

C：all

D：it

My elder brother has gone to Tibet to work as a volunteer teacher. Influenced by him, I also want to become_______when I graduate from the university.

A：that

B：it

C：this

D：one

---Should I help you, sir?---I appreciate ________ if you do me the favor to pack the luggage.

A：/

B：that

C：you

D：it

Gender imbalance has become a serious problem in China, _______ the Chinese government is giving serious thought to.

A：the one

B：that

C：one

D：those