问题
选择题
—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
答案：B
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—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：B