23. Measles ___ a kind of infectious illness. a. is b. are c. were d. have been 24. The Philippines ___ to the south-east of China. a. lies b. lie c. lay d. lays 25. Mary is one of the girls who ___ always on time. a. is b. am c. are d. was...
2.意义一致; 这个主要是涉及到集体名词,比如audience;army;family;jury;stuff;crew;couple等,如果这类词意义上指整体的概念谓语就用单数,如果意义指具体成员则谓语动词就用复数。 如:The population in this area is increasing very slowly. One third of the popula...
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