选词填空，注意使用适当形式。teach, knife, pronounce nine, they小题1: Dear, w

选词填空，注意使用适当形式。
teach, knife, pronounce nine, they
小题1: Dear, we need three more __________.
小题2:The children are not old enough to take care of ___________.
小题3: We’re in the __________ grade now. And we should learn hard.
小题4:We should pay attention to our __________.
小题5:Dad, who __________ you English when you were young.