I spent an hour at the station waiting for the train. （改为同义句）
It me an hour wait for the train at the station.
Why is your desk （tidy）？
Because I painted a picture there just now．
My grandparents live （peace） in the countryside and they like the life there．
Which dog do you think is （lazy）， Hobo or Eddie？
I think Eddie is．
My neighbour is a famous （sing） and she often does charity work．
More than thirty groups of are working to develop a vaccine for COVID﹣19．（scientist）