A、Wie
B、Wo
C、Woher
第1题
A.a tricky situation that leads gradually to disaster
B.a dangerous course leading easily to catastrophe
C.attempting to end a patient"s life without his assent
D.climbing a slick hillside in constant danger of falling
第4题
A. must have prepared for
B. ought to prepare for
C. ought to have prepared for
D. ought to prepare for
第6题
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