---Oh, doctor, the wound on my leg is infected.
---You really shouldn’t have left it _______ to the sun.
| A．discovered | B．exposed | C．opened | D．buried |
______ is our belief that improvements in health care will lead to a stronger, more prosperous economy.
| A．As | B．That | C．What | D．It |
It was___he said___disappointed me.
| A．what, that | B．that, that | C．what, what | D．that, what |
I was deeply impressed with the man’s willingness ______.
| A．by chance | B．to take chance | C．to take chances | D．taking chances |
--Where did you put my dictionary after using it this morning?
--I put it back ______ I took it.
| A．at which | B．where | C．there | D．there where |
The discussion came to life when someone ______ an interesting topic.
| A．came up | B．thought out | C．brought up | D．brought about |