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1.Would you like to ___ some flavored butter on your bread?
A.extendB.spread
C.scatter
D.distribute
2.A sincere ___ is as valuable as gold in the world.
A.complementB.supplement
C.compliment
D.compound
3.His supervisor asked him to ___ his departure for home, because his paper was not so well-done.
A.inferB.prefer
C.defer
D.refer
4.He is such a ___ person that he tends to believe everything you tell him.
A.credibleB.creditable
C.credulous
D.belivable
5.The airplane lost contact with the ground and ___ in the hills.
A.hitB.struck
C.smashed
D.crashed
