6. The doctor _______ me not to stay up too late at night.
A. forced B. suggested C. insisted D. advised
7. People will laugh ___ you if you wear that silly tie.
A. for B. at C. in D. on
8. I am pleased _____ all of you have studied better.
A. if B. that C. when D. how
9. This is the first time I _______ the experiment on this plant.
A. Have done B. did C. do D. would do
10. In the past, white or violet Ao dai ____ by Vietnamese female students as their uniform.
A. was worn B. wore C. would be wear D. used to wear