Bill plays ____________volleyball for an hour every day.
| A．a | B．an | C．/ | D．the |
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 |
Which is the circuit diagram（电路图）of the picture on the right?
