－Why didn't you go to play football with us yesterday afternoon?

－I ________ my mother with the housework then．

A．helped

B．was helping

C．had helped

D．have been helping

－Will you stay for some more days?

－Sorry, I ________．My mother called to ask me to go back at once．

A．mustn't

B．may not

C．can't

D．wouldn't

－I plan to buy a new MP3．Do you know the price?

－Oh, maybe you can buy ________ used one．It's much cheaper than ________ new one．

A．a, a

B．an, an

C．an, a

D．a, an

－Mr Smith, would you please speak a little more ________?

－Sorry! I thought you would follow me．

A．slowly

B．politely

C．seriously

D．clearly

－Have you seen the two films?

－No, I have seen ________ of them．

A．neither

B．either

C．both

D．none

－Must I get up early right now?

－________ , or we'll be late for the early bus．

A．No, you mustn't

B．No, you don't have to

C．Yes, you must

D．Of course you do

－Would you like some more tea?

－________ , please．

A．No more

B．Just a little

C．I’ve had enough

D．Yes, I would

－Don't forget ________ us when you are in Beijing．

－OK! I won't．

A．to visit

B．visits

C．visiting

D．to visiting

－Sam, would you mind if I copied the document?

－________．

A．Of course not, go ahead

B．Yes, please

C．Of course, do as you like

D．You’re welcome

－I'm leaving for Shanghai for my summer vacation soon．

－That's nice．________．

A．Never mind

B．Have a good trip

C．You'd better not

D．With pleasure