Graduation is a good time to thank those who have helped you ______ the tough years.
| A．through | B．up | C．with | D．from |
_____ no doubt _____ the Amber Room is one of the wonders of the world.
| A．It is; that | B．It is; whether |
| C．There is; that | D．There is; whether |
Although this medicine can cure you ________your illness, it has a bad effect____ you.
| A．for; in | B．for; on | C．of; on | D．of; at |
Only after the woman had her own child ________ how difficult it was to be a mother.
| A．she realized | B．had she realized |
| C．she had realized | D．did she realize |
Mrs. White showed her student some old maps _________from the library.
| A．to borrow | B．to be borrowed |
| C．borrowed | D．borrowing |
She smiled happily，________ a set of amazing white teeth to us.
| A．exposing | B．being exposed |
| C．exposed | D．to expose |