I ______the book to all my students and ______strongly them to read it carefully and explre the mystery in it.
| A．recommended; suggested | B．gave; advised |
| C．recommended; advised | D．suggested; demanded |
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Science and technology are developing ______ quickly that some new electronic products are out-of-date within several months.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 |
You should never lose ______ heart even if you are in ______ great trouble.
| A．/; / | B．your; / | C．the; a | D．a; the |