A feather falls slower than a stone only because the air holds the feather back more than it ______ the stone.
Soon they ____________ the water which ____________ the pipe.
The children were not ___ for the accident. After all, they were still so young.
I shall never forget those years ____ I studied in the school with my classmates and teachers,__________ has a great effect on my life.
It’s_____ that we should have to queue, when we have already got our tickets.
He had been so absorbed____ watching the car passing by that he didn’t notice his friends ____.