—Did you find the missing couple in the mountain yesterday?
—No, but we ________ to get in touch with them ever since.
| A．have tried | B．have been trying |
| C．had tried | D．had been trying |
A brilliant idea occurred to him, ________ to his research in the lab.
| A．while devoting | B．while devoting himself |
| C．while he was devoted | D．while devoted |
. Of the seven days in a week, Saturday is said to be the most popular ____ for a wedding in some countries.
| A．way | B．situation | C．event | D．choice |
The survey shows that if people cannot afford____ house, they will feel less content about ___life．
| A．the; the | B．a; / | C．a; the | D．/; the |
— I’ve been told that you are not content with your present job.
— Yeah. I am looking for a job _____ I can put my talent to good use.
| A．which | B．where | C．when | D．why |
. About one fourth of the families in the city have private cars and this number _____ to double in five years.
| A．is expecting | B．has expected | C．is expected | D．will expect |