Harry telephoned to the airport to_________ whether Flight 24 for San Francisco is departing on time.
| A．prove | B．ensure | C．confirm | D．identify |
The blind man thought___________necessary to pay back the help people gave him when it was sunny.
| A．that | B．it | C．this | D．him |
.The Chinese language differs from many Western languages___________it uses characters which have meanings and can stand alone as words.
| A．unless | B．until | C．now that | D．in that |
.Don’t be frightened by sharks as there is___________chance of being hit by lightning than being attacked by a shark.
| A．as thirty times great as | B．as thirty times great |
| C．thirty times as great | D．thirty times greater |
.Polly found herself_________ up at a man_________with his hand___________on her arm.
| A．staring; standing; resting | B．stared; stood; rested |
| C．stare; stood; rested | D．to stare; standing; resting |
The possibility____ pleasant smells might reduce pain has recently been suggested by new research.
| A．which | B．why | C．that | D．whether |