问题

afety issues, ____ willseriously affect the growth of teenagers and even the nation’s future.

A:if not solved properly
B:not if solved properly
C:if solved properly
D:not if properly solved

正确答案是：

同类题型

________ is your mother — She is 35.

If you do things ________,usually you can’t do them well.

s lecture, I can only give you a_______view ofhow we can live life to the full

Thewhy he is absenttoday is he hasgot a bad headache

This skirt is made________your father________hisown measure