甲、乙、丙三人各乘一只热气球,甲看到楼房匀速上升,乙看到甲匀速上升,丙看到乙匀速下降,甲看到丙匀速上升,那么,甲、乙、丙对地可能是( )
( ) Can you slow? A.running B.run C.to run
( ) I’m winner. A. a B. an C.the
( ) --- can you see? --- I can see a duck A. Where B.What C.When
( ) I can see a , It can fly. A. bird B. tiger C.flower
( ) Let’s. A. seeing B. to see C. see