The teachers had a discussion on ________ the naughty(顽皮的)boy needed punishing or not．

A．what

B．how

C．if

D．whether

We carefully compared the result of the first experiment with ________ of the second one．

A．it

B．that

C．the ones

D．this

Tony suggested ________ a taxi unless we were in a hurry．

A．taking

B．to take

C．not taking

D．not to take

________ he is very young, ________ he knows a lot about how to be healthy．

A．Though; but

B．Although; but

C．/; but

D．Although;/

Doctor Lee said the sick boy ________ an operation yet．

A．needed

B．needn't

C．didn't need

D．needed not

Chinese students must ________ their hands first and then ________ to speak in class．

A．raise; rise

B．raise; raise

C．rise; rise

D．rise; raise

The plane leaves ________ Shenzhen at 10∶30．

A．to

B．in

C．for

D．at

Simon usually plays ________ guitar on Sunday morning and plays ________ chess on Sunday afternoon．

A．the; the

B．the;/

C．/; the

D．/; /

As we know, the population of the world is becoming ________ and a number of babies ________ in the world every day．

A．more and more; are born

B．larger and larger; are born

C．more and more; were born

D．larger and larger; were born

I find ________ difficult to learn English that I nearly want to give up．

A．it so

B．it too

C．that's so

D．that's too