He _______ until it began to rain.

A. didn’t stop working B. didn’t stop to work

C. stopped to work D. stopped working

—_______ they _______ the book _______ to the library yet?

—Yes, they have.

A. Have； returned； / B. Have； returned； back

C. Did； return； / D. Did； return； back

Don’t try to do everything at once. Take it a bit _______.

A. at times B. at that time

C. at all times D. at a time

—Be careful! A car may hit you.

—Thank you! I _______ I _______ so close to the road.

A. didn’t know； am standing

B. don’t know； am standing

C. didn’t know； was standing

D. didn’t know； would stand

—You’d better ask Mr Wang for help when _______ problems.

—I see, but I’m not sure when _______ time.

A. you have； having B. having； he has

C. to have； he has D. to have； having

—_______ I wash the clothes now?

—No, you _______. You _______ clean the room first.

A. Must； don’t have to； may

B. Must； needn’t to； must

C. Must； mustn’t； can

D. Shall； may； may

Mary didn’t know who _______ the problem she met with at that time.

A. to talk about B. to talk to about

C. will take to about D. will to talk

Everyone had an application form in his hand, but no one knew which office room _______.

A. to send it to B. to send it

C. it to send D. it send to

The _______ woman _______ Shanghai since her husband died in 1990.

A. lonely； has gone to B. alone； has left

C. lonely； has been in D. alone； has been to

—Is Mrs Liu a teacher with a lot of teaching _______ ?

—Yes, she is. But she had some bad _______ at the beginning.

A. experiences； experience

B. experience； experiences

C. experience； experience

D. experiences； experiences