把下列句子变成被动词态。 1. Do they teach Japanese in their school? ______________________________________________________ 2. We heard her sing in the room. ______________________________________________________ 3. Will they eat a special dinner at the restaurant? ______________________________________________________ 4. He hasn't finished his homework yet. _____________________________________________________ _ 5. He gave me a very nice present for my birthday. __________________________________________________ ____ 6. Can we make jiaozi at school? ______________________________________________________ 7. Must we finish the work now? ______________________________________________________ 8. Linda looks after the kid at home. ______________________________________________________ 9. He found nobody in. ______________________________________________________ l0. They saw a lot of students playing basketball on the playground. ______________________________________________________