用所给词的适当形式填空。

1. Tom ______ (win) first prize in yesterday's dancing competition

2. He ______ (meet) a well-known basketball player in the street yesterday morning.

3. I ______ (eat) a bowl of noodles for supper,  But it was terrible!

4. John helped her______ (buy) a new coat last week.

5. We______ (watch) a movie about living in the future.

6.  None of them ______ (be) in the house just now.

下图为与人缩手反射相关结构的示意图，请分析并回答下面的问题。

肉毒杆菌毒素是从肉毒杆菌中提取出的毒蛋白，是目前已知的最强的神经毒素，它能抑制运动(传出)神经末梢突触前膜乙酰胆碱的释放。微量注射此毒素可以阻断（），使肌肉松弛性麻痹而达到除皱的功效，这种毒素作用的位置是图甲中（）(填图中字母)处。