【题目】-Can I join Oxfam Trailwalker?
-Only if you are ________ eighteen.
A. over B. on C. under D. below
【题目】Peter has gone to Shanghai. He will come back _______ two months.
A. in B. for C. since D. before
【题目】-Can I join Oxfam Trailwalker?
-Only if you are ________ eighteen.
A. over B. on C. under D. below
【题目】Peter has gone to Shanghai. He will come back _______ two months.
A. in B. for C. since D. before