If the building project _________ by the end of this month is de- layed, construction company will be freed.
When he came back from abroad, Joan told us about the cities and the people ______ he had visited.
The Science Museum, ______ we visited during a recent trip to Britain, is one of London’s tourist attractions.
Peter was so excited ______ he received an invitation from his friend to attend the wedding.
When you read a book, you should make a mark ______ you have any question.
Reading is an experience quite different from watching TV; there are pictures ______ in your mind instead of before your eyes.