Mary got up late this morning, ________ she didn’t catch the first bus．

A．because

B．for

C．so

D．or

My grandfather wants ________ around the world because he enjoys ________ new places．

A．traveling; seeing

B．to travel; to see

C．to travel; seeing

D．traveling; to see

－Her radio is too loud, isn’t it?

－Yes．Let me tell her ________．

A．to turn it up

B．turn up it

C．turn it down

D．to turn it down

－I think drinking milk is good ________ our health．

－Yes．I agree ________ you．

A．for; with

B．to; with

C．at; on

D．in; with

－John, will you please ________ the blackboard now?It’s your duty．

－OK．

A．not clean

B．not to clean

C．to clean

D．clean

－Mary, would you like to visit the Science Museum with me?

－________, but surfing the net seems more interesting．

A．I’d love to

B．That’s it

C．You’re welcome

D．No problem

You look tired now．You ________ stay at home and have a rest．

A．had to

B．had better

C．would like to

D．would rather

If we all make a contribution to ________ the environment, the world will become much more beautiful．

A．protecting

B．protected

C．protect

D．protects

He was ________ sad at the bad news that he could hardly say a word．

A．very

B．so

C．too

D．much

John asked David how ________ Christmas．

A．celebrating

B．to celebrate

C．to be celebrate

D．celebrated