—Dad, must we stop and wait when the light turns yellow?—I’m afraid we . It’s necessary to obey the traffic rules.A. need B. must C. may
They are going to have a picnic _______ next week.
There are about ________ students in our school.
—Do you like our English teacher? —Yes. I think his class is very ________.
This is your pencil. ________ is over there, on the desk.
Doing morning exercises is good ________ our health.