_______his thoughts, the scientist didn’t notice what had happened before him.
| A．Absorbed in | B．Caught in |
| C．Used to | D．Interested in |
—Hi, Lily. Don’t forget to watch I’m a Singer at 10:00 this Friday night!
—What a pity! I in a plane to Hainan for a meeting then.
| A．will sit | B．will be sitting |
| C．am sitting | D．sit |
China’s efforts on food production and safety will after the new food law is introduced.
| A．show off | B．turn off |
| C．put off | D．pay off |
Everybody said it was a perfect marriage, no one had ever know couple.
| A．the happier | B．a happier |
| C．a happiest | D．the happiest |
You should study the details of the policy before you sign it.
| A．in return | B．in advance |
| C．at ease | D．on purpose |
Many parents made their daily routine to get out for a walk in the evening.
| A．this | B．it |
| C．that | D．what |