It was a long and tiring trip, _______ most of us enjoyed it.
A. and B. but C. so D. because
My mother often tells me _______ others when they are in need of help.
A. to help B. help C. helping D. helped
—May I take this book out?
—No, you _______.
A. may not B. don't C. needn't D. mustn't
Mobile phones are popular now and they are _______ than before.
A. cheap B. cheaper
C. cheapest D. the cheapest
—_______ does it take you to get to Hainan by plane?
—Three hours.
A. How far B. How many
C. How often D. How long
Miss Wang is very nice. We all like _______.
A. it B. her C. him D. Them
