【C3】A．AllB．BothC．EitherD．Neither

【C16】A．SomeB．OneC．EitherD．Neither

My brother and sister are ___________ doctors.A、allB、bothC、 eachD、any

_______ of the students has two books.A、AllB、BothC、EachD、Every

【C4】A．asB．soC．eitherD．neither

【C5】A．asB．soC．eitherD．neither

【C19】A．alsoB．tooC．eitherD．neither