John sold the camera yesterday which his brother ________him as a birthday present from Japan.

The speech given by Primer Wen Jiabao showed ______ broad knowledge he has.

People are starting to use energy from the sun, wind and water because they cost very________ and will never ________ .

We _____ more than 1,600 words since we began to learn English.

It turned out that she won the first prize in the competition, which was her modest expectation