—You look so tired. What’s the matter?
—I was so busy that I didn’t go to bed 12 o’clock last night.
| A．until | B．unless | C．if | D．so |
China is one of ____________countries in the world.
A. bigB. biggerC. the biggest
This boy is ________than the girl.
A. tallB. tallerC. the tallest
—____________do you read English ?
—Every day.
A. How oftenB. WhyC. What
— ________did you go yesterday?
—I went to Suining.
A. WhatB. WhenC. Where
They are twin sisters. They have something ______common.
A. inB. ofC. from