What should we do before we use the blender —I think we must read __________.

Why didn’t Mike attend the evening party? — He is a quiet boy; He loves reading at home ______ to parties.

_____ that he picked up his uncle at the airport—It was at 6:00 in the afternoon _____ he got offwork.

He didn’t go to the concert yesterday, did he — . He was busy studying for the tests.

________ you have seen things like thesebefore doesn’t matter