My aunt arrivedGuangzhouthemorning of March 13.

Now, everybody, please turn to page _________and look at the ___picture.

f there is no scientific proof secondhandsmoke causes cancer, there is no reason why nonsmokers should be forced to takethis risk.

This kind of plant is ______ to the changes of the temperature. So you should keep it from freezing.

great efforts to practice English, Mary has made much progress inspoken English.