完整拼出句中欠缺的單詞.
    1 We must try to o( )e any kind of regulations.
    2 If you drive carefully, there is no r( )k of accident.
    3 Mirrors r( )t our faces.
    4 You'd better c( )t a doctor when you are sick.
    5 I felt i( )t relief from pain after taking a dose of medicine.
    答案：
    1 observe
    2 risk
    3 reflect
    4 consult
    5 instant