－English is too difficult for me．

－Never give up; ________ you'll be better．

A．but

B．or

C．and

Don't make ________ same mistake for the second time in ________ day．

A．the; a

B．a; a

C．the; the

My sister hates the films ________ have too much fighting．

A．that

B．what

C．they

There were no doctors in the poor area, ________ the medical team had to work hard．

A．so

B．though

C．unless

They spend the day ________ the new toys．

A．to play

B．playing

C．to play with

D．playing with

No one knows ________．

A．how to do

B．what to do

C．how do it

D．what to do it

Santa Claus ________ a really person in history．

A．based on

B．is based on

C．is according to

D．gave birth to

This kind of paper is made ________ wood．

A．from

B．of

C．in

D．by

The cup with three legs ________ wine in the old days．

A．was used to drinking

B．was used for drinking

C．used to drinking

D．used to drink

I ________ to Canada twice．It's so beautiful．

A．won't go

B．don't go

C．have been

D．have gone