16. ---“It’s six o’clock and your father is still at the office. ” ---“I   know, who else would ___D_____ he does?”

A) be as hard working as

B) as working harder than

C) do harder work than

D) work as hard as

17. ---“How many presidents were there before Abraham Lincoln?”---“Fifteen.So   he was ___B____ .”

A) The sixteen president

B) the sixteenth president

C) president sixteen

D) president the sixteen

18. They say Mexico City is more populous than ___B_____ in the world.

A) any City

B) any other city

C) any else city

D) any rest city

19. I wanted to go home but my wife ____C____ on going to the concert.

A) persisted

B) resisted

C) insisted

D) intended;

20. Have you finished your homework? This lesson is ____D____ than the last   one.

A) more easier

B) more easy

C) very easier

D) much easier