reported that a school bus fell into a riverand 14 pupils were killed in Hunan Province the other day. —Yes,_____ news came as _____ shock to all ofus.

I failed again. I wish I _________ harder.—But you _________.

下列各句中，没有语病的一句是

In the future, care for the environment will become very important as earth’s natural resources _____.

How long can I____ this book —- Two weeks.