look at the apple ( ）the trees A.at B.in c.on选哪个,为什么呢?

Look at the apple.One is big.One issmall.They are ,(different look at the apple ( ）the trees A.at B.in c.on选哪个,为什么呢? look at the picture.There are many childrenlook at the picture. There are many children in the park. Mike is picking up apple. Look At The Sky look at the boy. look at the Look at the picture Look at the 造句 look at the look at the chart look out at the look at the beach Look at the blackboard look at the Look at the look at the ( ),please LOOK AT THE STARS Look at the ears!