英语填空,写出空缺处各单词的正确形式

英语填空,写出空缺处各单词的正确形式
1、I need to write a thank-you n____ to Harvey after his dinner party.
2、We can walk across the river.because the level of the water is l____.
3、It's useful to start a conversation with a s____ talk.
4、We were singing when the teacher e____ the classroom.
5、He gets a____ when someone stands in the subway door.
6、The little girl didn't buy the clothes,as her family was p___.
7、There are many f____ to be built to make new things.
8、Tom is too young to d____ himself when he gets up in the morning.
9、Students are s____ to listen to the teachers carefully in classes.