People should think about _____ they can have a positive influence on the planet.
#79242
A
why
B
that
C
what
D
how
推荐题目
Jim is unhappy, do you know_____? 
#38529
A
what he happened
B
what the matter is with him.
C
what happened to him
D
what did he happened
--- Could you tell me      ?  --- Certainly. At 8 o’clock.
#38004
A
when will the train to Beijing leave
B
when the train to Beijing would leave
C
when the train to Beijing left
D
when the train to Beijing will leave