Tom, I’m sorry I’ve lost yourbook..—– _____ .I have another one.

It is Ms Chen’s serious attitude________her work and her interesting methods of teaching that make us like her very much.[ ]

Whether ways will be found to help China _______ the current world financial crisis is just _______worries the public.

When can I use your computer—Never! ________should you touch it.

When you meet a new word, you may ______ the new word in a dictionary.