The bus was held up by the snowstorm, the delay.
| A．causing | B．caused | C．having been caused | D．to cause |
The doctor said he must avoid excitement in order for the disease to __________.
| A．treat | B．believe | C．heal | D．deal |
Microscope will __________ much that cannot be seen with the naked eye.
| A．heal | B．bear | C．reveal | D．fold |
He __________ fine new clothes than for anything else.
| A．takes more away | B．takes more in |
| C．cares more for | D．cares more about |
—According to my grandma, it is a good idea to eat chicken soup when you have a cold.
— __________, scientists agree with her.
| A．Sooner or later | B．Once in a while |
| C．To be exact | D．Believe it or not |
So difficult __________ it to work out the problem that I decided to ask Tom for advice.
| A．I did find | B．did I find |
| C．I have found | D．have I found |