I’m afraid I’m not _____ to help with the show next week.
| A．available | B．dependable | C．valuable | D．convenient |
In much of the animal world，night is the time________for sleep—pure and simple.
(2013·湖北，26)
| A．set aside | B．set down |
| C．set off | D．set up |
Butterflies________a sweet liquid produced by flowers，which bees and other insects collect. (2013·湖北，25)
| A．carry on | B．feed on |
| C．put on | D．focus on |
According to the law，all foreigners have to________with the local police within two weeks of arrival.(2013·湖北，24)
| A．associate | B．dispute |
| C．negotiate | D．register |
Team leaders must ensure that all members ________ their natural desire to avoid the embarrassment associated with making mistakes. (2013·江苏，29)
| A．get over | B．look over |
| C．take over | D．come over |
________，John returned to school from his hometown.
| A．The summer vacation being over |
| B．The summer vacation is over |
| C．Because the summer vacation over |
| D．After the summer vacation being over |