动词填空。 1.  Jack ________ (be) late this morning because he missed the early bus. 2. Mrs White is in the classroom now. She________ (talk) with some students. 3. ---Are there any apples in your shop, madam? ---Sorry, we ________ ( not sell ) any fruit. 4. Now we are doing our best ________ (learn) English well. 5. I ________ (take) care of my lovely dog until the end, I think. 6. When I was doing my homework at home, I heard her________ (call) for help. 7. If it________ (snow) tomorrow, we'll watch TV at home instead of going diving. 8.The girl often ________ (swim) alone in the river when she was very young. 9. It's very important ______ __ (not give) your goldfish too much food. 10. They always have a great time ________ (chat) with each other.