______ twenty minutes enough for you to get to the station?
A. Are B. Do
C. Is D. Does
In the past few years there ________ great changes in my hometown.
A. has been B. have been
C. have had D. were
To make our city more beautiful, rubbish _________ into the river.
A. needn’t be thrown B. can’t thrown
C. mustn’t be thrown D. may not thrown
— Does your mother often _______ to you?
— Yes. But she always ________ the same words.
A. talk; say B. talk; says
C. speak; tells D. talk; speaks
---The students of Class 7 are going to the seaside this weekend.
---Remember _____ them not to keep _______ alone in the sea. It’s dangerous.
A. telling; swimming B. telling; to swim
C. to tell; to swim D. to tell; swimming
The twin sisters have learned a lot ________ they came to China.
A. when B. after
C. since D. as soon as
