--- What has made him upset recently?
--- __________ alone to face a troublesome case．
| A．Left | B．Being left | C．Having left | D．To leave |
—Sally, do you mind if I take off my jacket?
—Of course not．．
| A．It doesn't matter | B．Make yourself at home |
| C．Enjoy yourself | D．Forget it |
—Dear son，I will take you to the big dinner tonight. _________You promise.
—OK. Mummy.
| A．Believe yourself | B．Behave yourself |
| C．Enjoy yourself | D．Help yourself |
_________a man’s age is, he can relax himself by wearing a confident smile.
| A．Whichever | B．Whenever | C．Whatever | D．However |
The results of the experiment proved to be very good, _________ was more than we expected.
| A．which | B．what | C．that | D．this |
Overloaded with work, many doctors now get far less sleep than they _________.
| A．shall | B．should | C．may | D．might |