Full_________ to looking after three children at home, she no longer has time to enjoy the various activities in the club.
Only when they were put in prison and lost freedom(自由) _________ its importance.
The Internet is a very useful invention for us, ______ we can do lots of things at home.
Science and technology are developing ______ quickly that some new electronic products are out-of-date within several months.
— Hi, Henry, I’m going to China for my holiday. — China? It is a country which is well worth .
You should never lose ______ heart even if you are in ______ great trouble.