Recent campus tragedies show thatsafety measures are so important that we _______ take them too seriously.

W0rd comes ______free souvenirs will begiven to _____comes first

It’s too bad that I failed in themath exam. If only I ______ hard at it!

The scientists have made an exhaustive study of the virus _______ many people have been inflected.

What’s your opinion about it?—-You can _____at a glance that the building was poorly built.