I'll go to meet you if I ______ free then.
A.will be
B.would be
C.am
D.was
第1题
A.a, a
B.the, the
C.the, a
D./, the
第2题
A.leaves
B.will leave
C.had left
D.left
第3题
A.A police
B.The police
C.Police
D.A policeman
第4题
A.left, had arrived
B.left, arrived
C.had left, had arrived
D.had left, arrived
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