They had an accident on the road and didn’t ________ at their hotel until after midnight.
| A．check out | B．check in | C．check on | D．check over |
, the disease will produce a powder poison that will kill the patient.
| A．If it untreated | B．If is untreated |
| C．If being untreated | D．If untreated |
—Do you think George has passed the driving test?—No. If so, he ______ his car to our college yesterday.
| A．would drive | B．drove |
| C．would have driven | D．had driven |
He thought that as he had worked for the company for so long, he higher pay.
| A．received | B．required |
| C．deserved | D．saved |
Parents have to be able to to be , to go with their kids, and also give them the room to grow.
| A．flexible | B．strict |
| C．responsible | D．careful |
A beekeeper has a to motivate the bees by leaving some honey in the hive—not so much in case that the bees stop working.
| A．trick | B．tool |
| C．talent | D．desire |