What ______ the number of the students in your school–About two thousand. A number of them _____ from the countryside.

The doctor advised Mr. Chen ______ too much meat to lose some weight.

Tom and I ____ good friends, Tom’s grandparent ______ a teacher in our school.

My friend and I are interested in drawing, but ________ of us is good at it.

The thought of going back home was kepthim happy while he was working abroad．