_____ the police arrived, the thief ran away. [ ]A. When B. Bef

题型：同步题难度：来源：

_____ the police arrived, the thief ran away. [ ]
A. When
B. Before
C. After
D. While

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举一反三

_____ I was walking to school, I saw a cat climbing a tree. [ ]
A. When
B. While
C. Before
D. After

题型：同步题难度：| 查看答案

I am listening to music________ my sister is doing her homework.[     ]
A. when
B. while
C. and
D. so

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Stop smoking, _____ you will get better soon.      [     ]
A. and
B. or
C. but
D. after

题型：期末题难度：| 查看答案

I like pandas, _____ I don"t like monkeys. [ ]
A. and
B. but
C. /
D. because

题型：期末题难度：| 查看答案

Linda tried to become an excellent teacher,___________ at last she succeeded.[     ]
A. however
B. or
C. but
D. and

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