He waited until it was dark ____ nobody could see him clearly.
| A．so that | B．in order to | C．although | D．However |
The shop owner will get all these goods ordered ___________ to the customers today.
| A．to deliver | B．delivering | C．deliver | D．delivered |
, 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 |