30.It’s an opportunity to enjoy a bit of adventure, travel, maybe gain some work experience or spend some time ________ other people.
A.help
B.helping
C.helped
正确答案是B
30.It’s an opportunity to enjoy a bit of adventure, travel, maybe gain some work experience or spend some time ________ other people.
A.help
B.helping
C.helped
正确答案是B