问题补充:
—Mom, my classmates invited me a field trip. May I go with them?
—OK.
A. go on
B. to go on
C. go in
D. to go in
答案:
A. go on
B. to go on
C. go in
(答案→)D. to go in
解析:go on继续,发生;go in进去,参加。句意:妈妈,我的同学们邀请我参加一个郊游。我可以和他们去吗?——好吧。Invite后接带to的不定式做宾语,表示具体的将要进行的动作,结合语境可知选D。