The people _____ helped us build our hometown are from Beijing.
A. which B. whom C. who
– Do you know who cleaned the blackboard, Tina?
-- Yes. John _____.
A. do B. does C. did
_____ he was only twelve, he could run faster than any kids in the school.
A. Though B. Because C. If
– Do you know _____ this time yesterday?
-- Sorry, I don’t know.
A. what she is doing B. what was she doing C. what she was doing
He has read many books on history, so it's for him lo answer these questions.
A. hard B. impossible C. easy D. serious
Driving after drinking wine in China.
A. allows B. doesn't allow C. is allowed D. isn't allowed
