Professor Jordon is well known for his _____ into the habits of the common housefly.
| A．examination | B．introduction | C．research | D．expression |
Not until I began to work ________ how much time I had wasted.
| A．didn’t realize | B．did I realize | C．I didn’t realize | D．I realized |
The roads are crowded __________ walking to work is even quicker than driving.
| A．so that | B．in order to | C．so as to | D．so as that |
We had a really bad time about six months ago but now things are______.
| A．picking up | B．coming up | C．making up | D．turning up |
— Have you seen the film Under the Hawhorn Tree?
—Of course, I have. It was in our village _____ it was made.
| A．that | B．where | C．when | D．which |
You can see the stars on a clear night, but in the daytime they are _____
| A．unbelievable | B．invisible | C．inaccessible | D．unavailable |