The letter is ________in French. I cannot read it.

wonder how it ________ that they made such rapid progress.

_____ is known to all is that effective measures should be taken to deal with the problem of the over-exploiting of our resources

The human mind can many tasks that other animals cannot, like using language and judging what other people are thinking．

1If they live in Chongqing, they can go to Wuhan _____easily.