these toys are not suitable for children____four years old,who are too younoutsideB.beyondC.underd.within

these toys are not suitable for children____four years old,who are too youn
outside
B.beyond
C.under
d.within

under

under 如果你买过笔芯的话，那个小袋子上会有用英语写的一句话，类似这个意思，就用的under

C,under. 这些玩具不适合四岁以下的孩子，他们太小啦

C。under