______ about wild plants that they decided to make a trip to Madagascar for further research.
| A．So curious the couple was |
| B．So curious were the couple |
| C．How curious the couple were |
| D．The couple was such curious |
_________ I picked up the receiver, I realized that someone had dialed the wrong number.
| A．The moment | B．A moment ago | C．After a minute | D．Minute after |
Snow is rare in this area. You can hardly see any snow, ________ it is winter.
| A．ever since | B．now that |
| C．even though | D．even so |
The prices have been rising all the time, especially that of housing. So it is high time the government _______ action to solve it.
| A．takes | B．have taken | C．took | D．to take |
— So much work needs to be finished in such a short time.
— _________ I’ll give you a hand.
| A．Not to worry. | B．So what? |
| C．You can’t be too careful! | D．That’s right. |
________ no modern technology, the Egyptians had to move each stone by hand.
| A．It being | B．There being | C．There was | D．Being |