题文
—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.going on |
—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.going on |
试题篮
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