The boy _____ mother was ill could not come to school.

We’re talking about the piano and the pianist __________ were in the concert we attended last night.

Do you want a friend to       you could tell everything?

A good advertisement often uses words ________ people attach positive meanings.

Mr. Thompson, without _________timely help finishing the task would have been out of the question, fell ill last week.

Mark Twain worked for several years as a pilot on a steamboat, taking passengers up and
down the Mississippi, the great river ___flows from the north of the US near the Canadianborder.

In the past few years, My Heart Will Go On was a popular song among young people, _____were often heard singing it at parties．

Lawrence Craven, a doctor from the USA, is the author of several published reports, one of ________ introduced the idea in 1953 _________ aspirin could reduce the risk of heart attacks.

I don’t like the way ______ you speak to your mother.

_______ is known to everybody, the moon travels around the earth once a month. .