There is __________ “u” and __________ “s” in the word “student”.
| A．a, a | B．a, an |
| C．an, an | D．an, a |
My shoes are worn out．They need_______．
| A．to repair | B．be repaired |
| C．repaired | D．repairing |
_______ Andy was playing，his mother came home．
| A．While | B．Until | C．Although | D．Since |
一Look! There is a small bridge on the river．
一It ________ two days ago．
| A．built | B．was built |
| C．has built | D．has been built |
It is said that the gravity on Mars is only about __________ of the gravity on earth．
| A．three-eighths | B．third-eighth |
| C．three-eighth | D．third-eighths |
---I met Daniel in the street yesterday, I ________ him since he left for Beijing．
--- Well, does he look like what he used to be?
| A．haven’t seen | B．didn’t see |
| C．hadn’t seen | D．wouldn’t see |