If we ______ take environmental problems seriously, the earth _______ worse and worse.
A. don’t; will beB. won’t; isn’t
C. won’t; is D. don’t; won’t be
— How far is it from Tianjin to Changsha？
— It is a _______ flight from Tianjin to Changsha.
A. 2-hour-long B. 2-hours-long
C. 2 hours’ longD. 2 hour long
She got a nice skirt as a present on her birthday. Do you know _______ ？
A. what was it made ofB. how much did it cost
C. who buys it for herD. where she bought it
— I’m sorry, sir. I’ve made a lot of mistakes in the exam.
— Never mind. _______, the exam is a little difficult.
A. In all B. First of all
C. After allD. Above all
— Why don’t you watch TV at home？
— I’d love to, but my mother doesn’t allow me _______ that.
A. do B. did
C. to doD. doing
— Why did you laugh just now？
— Ted wanted to tell us ______ very funny story, but he forgot ______ ending himself.
A. a; anB. the; the
C. the; aD. a; the
