Helen always helps her mother even though going to school____ most of her day.
There are five ______________ books in the room.
The number of students in our school _______ 4,000 and a number of them ______ good at playing Ping-Pong.
The teacher is easy-going, and she often _____ in the pupils’ games. [ ]
The teacher couldn’t make himself ____ attention tobecause students were addicted to the short message.