用所给词的正确形式填空。
1. Jenny _____ (need) some help. Can you help her _____ (cut) up the tomatoes, please?
2. I'm busy now. Please _____ (turn) on the radio for me.
3. How many _____ (tomato) do we need to make a great turkey sandwich?
4. It takes me about lo minutes _____ (make) a banana milk shake.
5. What do we need _____ (buy) for supper?