1. The meeting _______ (start) at 8:30 am and _______ (finish) at 3:30 p.m.
2. We _______ (have) pizza for dinner tonight .
3. They _______ (see) many different kinds of birds at Beijing Wildlife Park yesterday.
4. If more and more wetlands _______ (disappear), there _______ (be) less and less space for plants,
    animals and birds.
5 ._______ (not drop) litter carelessly.
6. Mr. Green _______ (not go) home until he finished his work.
7. Mother told me _______ (wash) the clothes at home.
8. It's important for the students _______ (write) carefully and clearly.
9. Listen! How beautifully the girls _______ (sing)!
10.               you              (go) to visit your grandfather next week?