Ordinary soft drinks enter human body through stomach ______ alcohol goes directly into the blood system.
| A．until | B．while | C．as | D．before |
spacecraft Shenzhou Ⅶ took off on November 1st, 2011, at Jiuquan Satellite Launch Center in Northwest China.
| A．The; the | B．The; / | C．A; the | D．A; / |
It was Friday. We were asked to write a______composition.
| A．200 words | B．200-word | C．800-word | D．800 words |
Try hard to make what the teachers teach______,and you’ll all make good progress in your studies.
| A．you | B．yours | C．youself | D．youselves |
---Could I have a word with you, mum?
---Oh, dear, if you______.
| A．can | B．must | C．may | D．should |
He______on the farm for twenty years and now he is a teacher.
| A．has worked | B．had worked | C．worked | D．works |