It is a good habit (习惯) to read books        a pen in her hand.

--Is Sam taller than John？--No. Sam is not _________ him.

— ________ times do you visit your grandparents every year?— Three or four times a year. Usually at Mid-Autumn festival and Spring Festival.

Which is _____ difficult, this one or the other two?

---How can we help _________ people?--- We can help them cross the road.