When a new disease breaks out, experts must ________ what to do in the fastest way.
| A．figure out | B．take out |
| C．point out | D．make out |
See the flags on top of the building? That was we did this morning.
| A．when | B．which | C．where | D．what |
Our club is open to adults only.________your children have entered without permission.
| A．There seems that | B．It seems to be | C．There seems to be | D．It seems that |
I want to know ______the thief was caught on the spot.
| A．which | B．that | C．what | D．whether |
The old lady’s hand shook frequently. She explained to her doctor ________ this shaking had begun half a year before, and ________, only because of this, she had been forced to give up her job.
| A．when; how | B．how; when |
| C．how; how | D．why; why |
Great changes have taken place in that school, it is no longer ________ it was 20 years ago, ________ it was so poorly equipped.
| A．what; when | B．that; which | C．what; which | D．which; that |