Not until I read your letter ________ the true state of the affairs.
| A．did I understand | B．had I understood |
| C．I understood | D．I had understood |
---Kevin, you look worried. Anything wrong ?
---Well, I _____ a test and I’m waiting for the result.
| A．will take | B．had taken | C．took | D．take |
There was _____ time when everything to do with ____nature could keep Anne spellbound.
| A．a, the | B．the, a | C．a, / | D．the , the |
_____ impressed me was the boy’s ability to deal with this kind of difficult physics problem.
| A．Which | B．What | C．It | D．That |
In no way should we hunt and kill antelopes. _____, everyone should make great efforts to protect them.
| A．In time | B．As a result | C．In addition | D．On the contrary |
I saw Tom _____ into the classroom without _____.
| A．slide; found | B．sliding; find |
| C．sliding; being found | D．to slide; being found |