the three students _____their lessons in their class.A ,all do b,both do c,doall d,do both

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thethreestudents_____theirlessonsintheirclass.A,alldob,bothdoc,doalld,doboththethreestudents_____the

the three students _____their lessons in their class.A ,all do b,both do c,doall d,do both
the three students _____their lessons in their class.A ,all do b,both do c,doall d,do both

the three students _____their lessons in their class.A ,all do b,both do c,doall d,do both
因为是3个,所以both肯定不对,此外do是实义动词,应该放在all后面,选a

选A

B None of the girls in their class plays football well. A Both of Both,和all 都不行,因为谓语动词加了s,所以应该使主语表示单数。 everyone