用“There be"的正确形式填空。1. There _____________many books on the table.
2. _________________ an old man under the tree.
3. _________________ some pencils and a pen in the pencil-box.
4. _________________ many flowers and trees in the park.
5. _________________ two clocks on the wall.
6. _________________ a big dog behind the table.1. are 2. There is 3. There are 4. There are 5. There are 6. There is