1. The umbrellas here are popular, because are inexpensive.

　　2. A boy was delivering papers. seemed to be in a hurry.

　　3. Your daughter thought we didn't notice .

　　4. This is a good book. is interesting and well-written.

　　5. Both he and were right, but no one believed .

　　6. is very important to learn English well.

　　7. She said that it was not that had awakened the baby.