Tom is the ( )(clever) student in his class.I have been here ( 填介词 )about there months.Where did you put the key (填介词)this door.

问题描述:

Tom is the ( )(clever) student in his class.
I have been here ( 填介词 )about there months.
Where did you put the key (填介词)this door.

cleverest
for
to