White-collar workers in China are willing to postpone their retirement age ______ blue-collar workers prefer to retire early.
| A．when | B．while | C．though | D．since |
. —Shall I give you a ride as you live so far away?
—Thank you. .
| A．It couldn’t be better | B．Of course you can |
| C．If you like | D．It’s up to you |
No one enjoys _______ at.
| A．laughing | B．to laugh | C．being laughed | D．to be laughed |
—Two months ______quite a long time.
—Yes, I’m afraid that he will miss lots of his lessons.
| A．is | B．are | C．was | D．were |
My boss hates being interrupted, when he is trying to work.
| A．occasionally | B．generally | C．specially | D．especially |
The reason why he succeeded is ______ he worked very hard.
| A．why | B．that | C．whether | D．how |