I would appreciate ____ if you could pick me up at the airpo

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

Everyone knows that________ is dangerous to play with fire, but________ is difficult is to prevent children from playing with fire.

A：it; it

B：what; what

C：what; it

D：it; what

I would appreciate ______ if you could give me a reply as soon as possible.

A：you

B：it

C：that

D：them

The saying “Old friends and old wine are best” means the things and people ____ we know are better than the unfamiliar.

A：what

B：which

C：that

D：who

When he took his gloves off ,  I noticed that        one had his name written inside.

A：each

B：every

C：other

D：another