1．pronounce(名词)                 
2．excite(形容词)              
3．understand(过去式)             
4．write(现在分词)     ____
5．difficult(名词)     ____
6．many(比较级)     ____
7．slowly(形容词)    ____
8．they(宾格)             
9．fast(同义词)    ____
10．watch(复数)    ____