The boy __under the tree is very good at math.A.to readingB.readingC.to readD.read为什么选?

(sit)__under the tree,the boy has been observing the ants for hours The boy __under the tree is very good at math.A.to readingB.readingC.to readD.read为什么选? Where are my books?I don'__.__ __under the chair怎么填 donald duck looks____,(love) doesn't it?的横线上填啥啊,速度啊 there are a few __under the tree They found a lot of people __under the houses.C.trapped D.are trapped 为什么?(U4.3) Which boy?The boy behind the door. The boy is ( )the window? () the boy light the candles. The boy and the giel look at the boy. the boy is singing the boy with short The boy looks____( happY) the boy in the boy in blue? what is the boy the boy in green Circle the boy.