They must try every means to _____ out flies and other insects in the restaurant to guarantee food safety.
| A．take | B．put | C．pick | D．wipe |
Thank you, but I’ll have to _______ your offer．
| A．turn away | B．turn down |
| C．turn back | D．turn off |
The “Chinese Dream” is _______ dream to improve people’s well-being and ____ dream of harmony, peace and development．
| A．the; a | B．a; a |
| C．a; the | D．the; the |
--- Did you remember to give Mary the money you owed her?
--- Yes．I gave it to her _____ I saw her．
| A．while | B．the instant |
| C．suddenly | D．once |
The president promised to keep all the board members _____ of how the negotiations were going on．
| A．inform | B．informing |
| C．be informed | D．informed |
______ chemistry is a branch of chemistry．
| A．Applying | B．Apply | C．Applied | D．To apply |