A dozen ideas were considered____the chief architect decided on the design of the building．
| A．because | B．before | C．whether | D．unless |
—Is the money your parents give you enough?
—No, I have to have a part-time job to my school expenses.
| A．cost | B．pay | C．cover | D．offer |
A computer can’t remember who ; it simply does what .
| A．will use it; it is told | B．uses it; it has told |
| C．used it; it is told | D．has used it; it told |
Emergencies and unexpected situations happen all the time.
| A．may | B．can | C．must | D．should |
While watching television, .
| A．the doorbell rang | B．the doorbell rings |
| C．we heard the doorbell ring | D．we heard the doorbell rings |
The rising frequency for smoggy days puts me into deep that maybe one day citizens will have to rely on masks to survive.
| A．doubt | B．worry | C．shock | D．faith |