---Why do you look worried?
--- Jane left the company half a month ago. Her work ______ unfinished since.
| A．left | B．has left |
| C．has been left | D．was left |
The little chick ______ the earthworm, deciding whether to swallow it or let it go.
| A．stared at | B．glimpsed at | C．looked into | D．glared at |
—What do you think of the building built to the shape of nature?
—______.
| A．Yes, I like its shape | B．What I like is the colour |
| C．It’s really like a bird net | D．I really think it is wonderful |
The road is covered with snow. I can’t understand ______ they insist on going by motorbike.
| A．why | B．whether | C．when | D．how |
You are saying that everyone should be equal, and this is ______ I disagree.
| A．why | B．where | C．what | D．how |
Is that the reason __________ you are in favor of Obama for the second round?
| A．which | B．why | C．the one | D．for which |