–Would you mind us asking you a few questions?

–_______.

A．Yes. Go ahead.                          B．Not at all. You’d better not.

C．Not at all. Go ahead                      D．No. I don’t mind.

Our experiment had got into _____trouble, so we decided to take _____ chance and add more water, and luckily, we succeeded.

A．/ ; /              B．/ ; a              C．the; a            D．a; a

 I remember the whole thing _____ it happened yesterday.

A．as               B．as if              C．even if            D．that

–Would you permit me ______here?

- Sorry, we don’t permit _____ here in the reading room.

A．smoking; smoking                       B．to smoke; to smoke

C．smoking; to smoke                      D．to smoke; smoking

 I didn’t see her in the meeting room this morning. She _____ at the meeting.

A．mustn’t have spoken                   B．shouldn’t have spoken

C．needn’t have spoken                   D．couldn’t have spoken

You can’t imagine _____ when they received these nice Christmas presents.

A．how they were excited                   B．how excited they were

C．how excited were they                   D．they were how excited

______ nice and delicious, the fried chicken was soon sold out.

A．Tasted            B．Being tasted        C．Tasting            D．To taste

 Is this school ______ you used to study?

A．where            B．at which           C．the one           D．that

________ you interrupt now? Can’t you see I’m on the phone?

_ Sorry, Sir, but it’s urgent.

A．Can              B．Should            C．Must             D．Would

Great changes ______ in my school in the past ten years.

A．took place                             B．were taken place

C．have taken place                        D．have been taken place