“毛毛虫”与“蝴蝶”分别是昆虫发育的哪个时期( )
下列说法正确的是( )
⑴朋友____
⑵I am ____
⑶中国____
⑷Britain____
⑸America____
⑹class____
⑺Come to the front ____
⑻Come from____
⑼Go back to your seats.____