This is one of the experiments __________ in our laboratory.
| A．being made |
| B．making |
| C．to make |
| D．having made |
Frequent smoggy weather has set the alarm ringing; by no means can we develop economy _____ the environment.
| A．under the name of | B．for the sake of |
| C．at the cost of | D．in the light of |
The English play _____ my students acted at the New Year’s party was a great success.
| A．for which | B．in which |
| C．at which | D．on which |
If you _____ regret things you did or didn’t do in the past, then you won’t be able to move forward.
| A．actually | B．briefly | C．casually | D．Constantly |
— Why are you still here! Everybody has gone to attend the lecture by the president!
— Oh, I ____ about it!
| A．wasn’t informed | B．didn’t inform |
| C．haven’t informed | D．hadn’t been informed |
You probably have noticed that people express similar ideas in different ways, _______ the situation they are in.
| A．bringing about | B．depending on |
| C． getting into | D．leading to |