Peter is my best friend. He often helps ______ with science.

There are many sales of mobile phones on www.taobao.com, and you can choose _____ based on your own interests.

Usually what weighs us down are not the burdens of life, but how we handle _______ .

The French Revolution was successful in______ society of inequality, which had a great effect on many other countries, particularly ______ in Europe.

No matter how busy he is, he makes _____a rule to surf the Internet for information.

I prefer a house in the coast village to______ in such a big city ______Beijing.

--- What about the price of these washing machines?
--- They are equal in price to, if not cheaper than, ____ at the other shops in the street.

­­­His favorite food is fried snack and soft drinks. ______ is no surprise that losing weight is just his dream.

No pleasure can equal ______ of having a good sleep after hard work.

I like _____ in the autumn when the weather is clear and bright.