Food safety is important. Rules to stop people from food pollution.
Which sign means "No touching"?( )
﹣﹣Tom was badly hurt in a car accident.
﹣﹣______.( )
I hope not
I am afraid not
I'm sorry to hear that
She heard a song____ was full of feelings of happiness.( )
which
who
what
﹣It seems impolite to ask direct questions,____ ?
﹣Yes,but I think it's OK to your close friends.( )
does it
doesn't it
isn't it
In the past people didn't know that light faster than sound.( )
travels
travelled
travel