We didn’t enjoy the tour _____the weather was terrible.
A. if B. though C. because D. when
—_____ is it from your home to school?
— It’s about ten kilometers.
A. How far B. How soon
C. How often D. How long
All the students in our class promised ____ the school rules.
A. follow B. follows C. following D. to follow
Our English teacher ____ in our school for about 20 years so far.
A. works B. has worked
C. worked D. will work
Drivers ____wear seat belts(安全带) while their cars are running on the road.
A. need B. can C. may D. must
I have to be off now. My friends _____outside.
A. wait B. are waiting
C. have waited D. were waiting