is no doubt that the Great Wall is one of the wonders of the world.
—Sandra failed to pass the exam. — __________ ? Nobody works harder than she does.
—You never think of others ! You kept me waiting for two hours. —I’m sorry that you _________ think so.
No one was sure exactly__________ he wanted
Not until____________the exam _________ the importance of doing homework.
I’m not sure whether be has finished writing the book, but he________ it last month.