The emergency required that all the tasks _____ at least two days ahead of time. A.to complete B.should complete C.be completed Dshould have been completed
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.
The picture ______ on the wall is painted by my grandfather.
Smoking pollutes air. You ______ smoke here.