You must leave here now ________ your mother can get some more rest.

A. became B. though C. so that

The population problem may be _____ one of the world today.

A. the most B. most difficult C. the greatest

I ______ ride a bike to school. But this morning, I walked to school.

A. never B. hardly C. usually

Yunnan is beautiful and I’m ______ visiting it again.

A. keeping clear of B. suffering from C. looking forward to

---Do you need more time to finish the work? --- Yes, another ten days ______ enough.

A. are B. is C. were

—What’s your favorite Chinese traditional festival?

—It’s .

A. April Fool’s Day B. the Spring Festival C. Christmas Day

_____ has questions is welcome to ask.

A. Who B. Those C. Anyone who

–Hi , Ann. How can you improve your English so much?

--Oh, nothing difficult. The you work at it, the progress you will make.

A. harder, more B. more hardly, more C. hardlier, greater

--- Why did the car hit the boy?

      --- Because the driver ______ on the phone at that time.

A. talk B. is talking C. was talking

My parents didn’t allow me ______ to the party.

A. to go B. go C. goes