If you still remember the ______ time of the accident, please tell us. We would ______ your help.

In the last ten years in China, 150 million people moved out of poverty ______, the challengesare still great[ ]

I hope you have a good trip. ______.

Great changes have taken place sincethen in the primary school _______I am studying.

By yesterday, the plane ______out of view for more than a month.