.
I wonder __________ that made him so upset yesterday.
| A．it was what | B．what is it | C．what it was | D．it what is |
There is _________ thing as a free lunch.
| A．not such | B．no such a | C．one such a | D．no such |
According to China's Food Safety Law, ______________ in February 2009, the State Council established the Food Safety Committee to oversee a chain of departments.
| A．as is passed | B．as it was passed |
| C．which is passed | D．which was passed |
We often see the situation of employers_____________ people they want, while job seekers
can't find the employers they want.
| A．having difficulty finding | B．to have difficulty finding |
| C．having difficulty to find | D．to have difficulty to find |
It's really noisy outside. I would appreciate ____ if you raise your voice in order to make yourself _______ in the back.
| A．this; hear | B．that; heard | C．it; heard | D．you; hear |
---What’s the matter with John? He has been sitting there for hours.
---A postcard from his father_______ an attack of home-sickness in him.
| A．took up | B．set off | C．brought in | D．built up |