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1.Passengers may leave bulky articles under the stairs ___ the conductor's permission.
A.at
B.with
C.on
D.in
2.His parents never intended ___ together with him though they hoped to see him off.
A.live
B.living
C.to have lived
D.to be living
3.You don't have to worry ___ we are here.
A.while
B.even if
C.though
D.until
4.The population of Pennsylvania increased from 50,000 in 1730 to more than 200,000 in 1763, ___ to the thousands of Scotch Irish.
A.in effect
B.in consequence
C.in large part
D.at large
5.It is due to the invention of the computer that man has been able to work so many wonders in the past few years. A case ___ is the successful launching of space shuttle.
A.in point
B.in question
C.in a way
D.in brief
