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.