Dennis＿＿＿the warning and put his hand into  the lion’s cage. 

Traditions and fashions, like society itself, change and         with time.

—Mum, it’s fine today. I want to skate on the lake. —Don’t you think the ice is too thin to _______ your weight?

 A fire broke out in a commercial mall unexpectedly ,     the customers and the persons working there fleeing for safety.

Living in the country，Peter doesn’t  write often，but we do hear from him________.