A mother returned home from the store．When she put down all of the things，her 8﹣year﹣old son ran up to her．He was waiting for her and wanted to tell her what his younger brother had done．

"While I was playing outside and Dad was on a call，Bill took his crayons and wrote on the new wallpaper of the living room!I told him you would be angry with him for doing it again，but I couldn't stop him．''Mother asked，''He did it again？Where is your little brother now？''"He is in is room，''the son answered quickly．

Then she walked to the younger son's room．She called his name as she entered．She found Bill who was trying to hide．For the next 10 minutes，the room was full of her shouting about the expensive wallpaper．The more she shouted，the madder she got．She walked forward to see what happened．When she saw the wall，tears（眼泪）filled her eyes at once．It said"I love Mommy"．

Well，the wallpaper remained，just as she found it．It reminds her and all：Take time to read the handwriting on the wall．

16．Before the mother came back，Bill　　．

A．had a big fight with his elder brother

B．broke all his crayons and threw them away

C．played games with his elder brother in their house

D．wrote something on the wallpaper of the living room

17．Dad was　　 while the elder brother was playing outside．

A．shopping online

B．talking on the phone

C．playing with the children

D．shouting at his little son

18．The mother felt　　 when she saw what her little son wrote on the wallpaper．

A．sad      

B．angry       

C．touched       

D．surprised

19．The underlined part in Paragraph 3 suggests（暗示）that　　．

A．the mother began to realize her mistake

B．the mother was quite angry with

C．the mother didn't get along well with her little son

D．the mother wanted to make her little son feel relaxed

20．the story mainly tells us that　　

A．it's never too late to show love to our families

B．it's important to think more before you take action

C．love from your mother often hides in small things

D．we'd better take time to learn from others'mistakes．