The question that puzzled them is ____ they can get rid of the air pollution in the area.
| A．how is it that | B．that is how | C．what is that | D．how it is that |
Don’t be so discouraged. If you such feeling, you will do better next time.
| A．carry on | B．get back | C．stick to | D．put away |
by a greater demand of vegetables, farmers have built more green houses.
| A．Driven | B．Being driven | C．To drive | D．Having driven |
It remains whether Jim’ll be fit enough to play in the finals.
| A．seen | B．to be seen | C．seeing | D．to see |
By the time he realizes he into a trap, it’ll be too late for him to do anything about it.
| A．walks | B．walked | C．has walked | D．had walked |
----I’m going to London next week.
-----______! So am I.
| A．What a coincidence | B．Congratulations! | C．Don’t mention it | D．Good trip |