—______is the street crowded with so many people?—Because they are waiting to watch the boat races.
– You didn’t do well in your English test last week.- Sorry.I will study _____ next time.
She always eats ____ food.
Our teacher has ____ to tell us,please keep quiet.
. --What's ____ with you,sir?--I have got a headache,doctor.
The book is ____. Most of the teachers are ____ in it.