Oh, the traffic is too heavy.－Let’s change ________route to the airport.

What were you and your sister doing when the telephone rang?— I while my sister was eating.

Much attention must ______ these details.

What’s _______number of school in the city? —–I’m not sure ,but I know there must be _______ number of schools in it.

My sister likes playing ____volleyball while my brother likes playing ___ piano.