楼主,你的问题跟内容不一致啊?
1.Tom with other boys__to go and___the game.
with other boys是用来修饰Tom的,Tom才是真正的主语,所以谓语形式应该是单数.而and后面用watch的原因,是受到want to的支配,want 后面加不定式（即to do ）go and watch两个动词吃并列关系,所以应该使用原型.
所以应该选C
Tom and other boys _____ to go and ____ the game.
这里就变成了Tom and other boys 做主语,谓语应该是复数,后面那一个同上,也是填watch.
这题就应该选A