With prices _____ so much, it's hard for the company to plan a budget.
| A．fluctuating | B．waving | C．swinging | D．vibrating |
— There is a book on the grass. Whose book is it?
— It Mike. Look, his name is on the front cover.
| A．belonged to | B．is belonging to |
| C．is belonged to | D．belongs to |
Only when they were put in prison and lost freedom(自由) _________ its importance.
| A．they realized | B．did they realize |
| C．realized they | D．had they realized |
The Internet is a very useful invention for us, ______ we can do lots of things at home.
| A．with which | B．with it | C．for which | D．for it |
Science and technology are developing ______ quickly that some new electronic products are out-of-date within several months.
| A．very | B．so | C．such | D．too |
— Hi, Henry, I’m going to China for my holiday.
— China? It is a country which is well worth .
| A．to visit | B．visiting | C．to be visited | D．being visited |