(2011·河北正定中学月考)Everyone of us has many responsibilities ______us.So we must work hard.
A.attaching B .attaching to
C.attatched with D.attatched to
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(2011·河北正定中学月考)We must be sure that children in our country should get well ______.
A.educate B educating C.education D.educated
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(2011·河北正定中学月考)The program was so fascinating that the children kept their eyes _____on the screen.
A.to fix B to be fixed C.fixed D.fixing
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(2011·河北正定中学第一次月考)17.The professor devoted all his life ____the treatment of AIDS.
A to research B.in researching C.to researching D.at researching
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(2011·河北正定中学第一次月考)15.They experimented _____the new medicine _____animals.
A.on; to B by ; on C.with ; on D with; to
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