One-third of the area _____ covered with trees. About seventy percent of the trees _____ been planted 
recently.
A. is; have B. is; has
C. are; have D. are; has
Allow children the space to voice their opinions, _____they are different from your own.
A. as if B. even if
C. in order to D. so that
I have _____ my husband again and again not to smoke, but I can’t _____him.
A. persuaded; advise B. advised; persuade
C. suggested; persuade D. suggested; advise
I want to know when he _____ for New York tomorrow.
A. has left B. is leaving
C. had left D. has been leaving
After he had been hit by many hardships and failures, the young man _____ at last.
A. gave out B. gave away
C. gave in D. gave off
Mr. Johnson’s son ______ lives in Chicago is a doctor.
A. who B. whom C. whose D. which
