Such habits as smoking and cheating, once_______

1________, the students remain optimistic and try hard to achieve their goals.
A.As they are faced with fierce pressure
B.As fierce pressure that they are faced with
C.Fierce as they are faced with pressureD.Faced with fierce pressure as they are
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2Later，Catherine Ⅱ had the Amber Room ________ to the palace outside St.Peters bergwhere she spent her summers.
A.to move
B.moving
C.move
D.moved
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3Sarah, hurry up. I'm afraid you can't have time to __________ before the party.
A.get changed
B.get change
C.get changing
D.get to change
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4To learn English well,we should find opportunities to hear English _______as much aswe can.
A.speak
B.speaking
C.spoken
D.to speak
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5________in the iron box，the tiger got angry.
A.To trap
B.Trapping
C.Trapped
D.To be trapped
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6The teacher wondered whether those ______at the back of the classroom could hear him.
A.seating
B.sit
C.seated
D.sat
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Such habits as smoking and cheating, once________, are hard to get rid of.