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【单选题】
(15)设广义表L=((a,b,c)),则L的长度和深度分别为( )。A.
1和1
B.
1和3
C.
1和2
D.
2和3
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【单选题】I planned ________ to see you last week, but I was ill.
A.
to have come
B.
tocome
C.
to be coming
D.
to have been coming
【单选题】--- When did you borrow the English book? --- I borrowed it last week. I _________ it for a week.
A.
borrowed
B.
have borrowed
C.
have had
D.
have lent
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