(   )1. —Do you often help your parents with some housework at home?

—______. I have to wash the dishes after dinner every day.

A. Never                   B. Maybe                  C. Certainly I do

(   )2. Last night, thousands of people ________ to see the stars arrive at the ceremony.

A. wait                        B. were waiting      C. have waited

(   )3. Most students don’t know ________ when their phones are taken away.

A. what can they do    B. how they could communicate   C. who they can play with

(   )4. Which sign means “Don't eat in class.”?