根据图片把下列词组的序号填入相应的位置。
A. No smoking B. Don't walk on the grass C. Stop D. Go
E. No talking F. Smile G .Don’t touch
① ____ ② ____ ③ ____④ ____
⑤ ____ ⑥ ____⑦ ____
写出下列字母的左邻右舍
①____ d ____
②____M____
③____ j ____
④____R____
⑤____V____
Playing too many computer games is ____ (harm) to you.
下列物体中,不是生物的是( )