16. As he reached ________ front door, Jack saw _________ strange sight.
A. the; a B. the; / C. a ;the D. /; a
17 My nephew ________watch whales spraying water from the blow-holes after he listened to my story.
A. was dying to B. was equal to C. was opposite to D. was close to
18. During the hard time of droughts, a large quantity of water was pumped from the rivers, __________ led to their__________.
A. that; drying up B. which; drying up
C. who; eating up D. where; coming up
19. The vaccinations(疫苗) have been_________ directly to the villagers from the factory who couldn’t purchase in the local hospital.
A. gathered B. distributed C. produced D. recycled
