When _________ our national flag _______, we feel our hearts full of pride and strength.
| A．watch; rising | B．watching ; raising |
| C．watching ; being raised | D．watch; to rise |
As time went by, the plan stuck ________ fairly practical.
| A．to prove | B．to proved | C．to proving | D．to proves |
Our manager ________ for Shanghai in a few days and he has asked me to find out when the earliest plane ________ next Wednesday.
| A．is leaving; takes off | B．will leave; is taking off |
| C．leaves; will take off | D．is to leave; is going to take off |
Stephen Hawking believes that the earth is unlikely to be the only planet _______ life has developed gradually.
| A．that | B．where | C．which | D．whose |
The sleeping baby would be scared _______ a sudden loud noise.
| A．was there | B．there was |
| C．should there be | D．there should be |
--David, are you 1istening to me?
---Sorry, Dad. I _______ to make sense of what the reporter said.
| A．was trying | B．have tried | C．am trying | D．tried |