As nobody here knows what is wrong with the machine, we send for an engineer to handle the problem.
| A．should | B．must | C．can | D．would |
—— What do you think of my speech? Being watched by so many people,
I always feel nervous.
—— You ______ quite well, though.
| A．carried it off | B．carry it off |
| C．had carried it off | D．have carried it off |
Some of the students have already learned enough English to _____
a conversation with an English speaker.
| A．go on | B．carry on | C．keep on | D．hold on |
_____ his overcoat, the manager went out immediately.
| A．Worn in | B．Dressed | C．Helped into | D．Put on |
—— Do young people in that country like to be engaged in teaching?
—— Not really, for teachers strongly feel that school systems____ them ____.
| A．let; down | B．let; off | C．let; go | D．let; alone |
I wonder how it ________ that they made such rapid progress.
| A．came about | B．came out | C．came on | D．came up |