_____ 20 girls Class 10 ______ another 30 boys.
Water, which seems to be so simple and common, is ______ makes life possible.
William Shakespeare occupied a ______ position in English literature.
We have been told that under no circumstances ______ the telephone in the office for personal affairs.
—Tom is so worried about the test that he said he was going to study all night. —Tell him he should quit ______ and get some help.
John didn’t feel well yesterday; otherwise he ______ to see his friend off at the airport.