—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
网友回答
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。