题目
(A)Is it too far to walk?
(B) Do you know where is the public bathroom?
(C) What do I do after walking two blocks along the street?
(D) What’ s the best way to the public bathroom?
第4题
A.LASTVT(S)={ +,a,) }
B.LASTVT(S)={ +,a }
C.LASTVT(S)={ +,) }
D.LASTVT(S)={ a,) }
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