Beijing, the capital of China, is one of __________ cities in the world.
A. the biggest B. bigger C. much bigger D. big
How time flies! Three years ____________ really a short time.
A. is B. are C. was D. were
I felt it hard to keep up with my classmates. But whenever I want to ____________, my teacher always encourages me to work harder.
A. go on B. give up C. run away D. give back
— How long have you ________?
— For three days.
A. got a headache B. fallen ill
C. caught a cold D. had a cough
— You don’t look well, Don! You’d better see your doctor.
— I ________, but he said there was nothing wrong.
A. will B. would C. had D. have
—Can I help you?
—I’d like ____________ for my twin daughters.
A. two pair of shoes B. two pairs of shoe
C. two pair of shoe D. two pairs of shoes
