Malaysia Airlines Flight MH370 seemed to have been ______ to only a mystery after so long and hopeless a search．
| A．reduced | B．formed | C．trapped | D．absorbed |
A good teacher must be able to help his students learn the subject with great interest ______ he reaches the last minute of the class.
| A．when | B．unless | C．until | D．after |
--I’m exhausted. I ______ on a design day and night.
--You’d better have several days off after finishing it. Otherwise you might break down.
| A．work | B．worked |
| C．had worked | D．have been working |
-But for your timely warning, we ______ into great trouble.
--You know we’re friends.
| A．would get | B．must have got |
| C．would have got | D．couldn’t have got |
--Alice won’t join in our discussion tonight.
--Oh, she ______. We have already put it off.
| A．mustn’t | B．can’t |
| C．shouldn’t | D．needn’t |
I will appreciate it ______ you can change your plan a little bit to make it more workable.
| A．so | B．if | C．since | D．although |