My sister______two hours writing the article yesterday.
A.paid | B.spent | C.took | D.cost |
We are sure one day the air in Beijing will be much ______ than today.
A.clean | B.cleaner |
C.cleanest | D.the cleanest |
What a nice day! We decide ______ out for a picnic.
A.go | B.going | C.went | D.to go |
— Have ______ cup of coffee, please.
— Thank you.
A.others | B.other |
C.another | D.the other |
John ______ leave for New York tomorrow, but I’m not sure.
A.must | B.may |
C.could | D.need |
Be careful with the knife, ______ you’ll be hurt.
A.so | B.or | C.but | D.because |