— What has made him unhappy recently?
— __________ alone to do the house work．
| A．Left | B．Being left | C．Having left | D．To leave |
—Are you firmly against any independence move by Taiwan?
—Of course. That’s ________ our basic interest lies.
| A．why | B．when | C．where | D．what |
You should be.You mustn't take any unnecessary risks until you are quite sure.
| A．dynamic. | B．desperate | C．considerate | D．cautious |
He said that not until the heavy snow blocked the express _________ how serious the weather was.
| A．did the tourists realize | B．the tourists realized |
| C．the tourists did realize | D．didn’t the tourists realize |
---What’s wrong with him?
----The picture he came across___his memory of a sad story in his childhood.
| A．put off | B．took off | C．set off | D．gave off |
—What do you think about the new teacher?
—________ the new teacher is an elegant lady, she can be extremely difficult to work with.
| A．As if | B．As long as | C．Because | D．While |