________ dog is ________ useful animal and ________ honest friend as well.
| A．A; a; an | B．A; an; a | C．The; an; a | D．The; an; an |
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 |
The old man keeps coughing________．I’m afraid you have to send him to hospital．
| A．between morning to night |
| B．from morning to night |
| C．between morning and night |
| D．from morning and night |
In the nineteenth century, English became international language．
| A．an | B．a | C．/ | D．The |