41.He opened the door to-- were eager to learn knowledge.

41.He opened the door to__ were eager to learn knowledge.
A.who B.that C.those who D.those
42.The camera can be __to take pictures in cloudy or sunny conditions.
A.treated B.adjusted C.adopted D.adapted
43.When Mary paid the bill she was given a__ for her money.
A.check B.receipt C.ticket D.label
44.The newly __ method has brought about great economic benefits to organization men and women.
A.adopted B.accepted C.received D.treated
46.The next afternoon I went to__ Miss Barkley again for the same matter.
A.call on B.call forth C.call after D.call off
47.I would rather you __ next month instead of tomorrow.
A.will leave B.leave C.would leave D.left
48.Which door does this key__ to?
A.set B.become C.fit D.belong
50.When he was in prison,he was not allowed to__ with his family.
A.commit B.communicate C.commission D.command