________ all of them are strong candidates, only one will be chosen for the post

题型：同步题难度：来源：

________ all of them are strong candidates, only one will be chosen for the post.[     ]
A. Since
B. While
C. If
D. As

答案

举一反三

________ volleyball is her main focus, she"s also great at basketball.[     ]
A. Since
B. Once
C. Unless
D. While

题型：同步题难度：| 查看答案

One Friday,we were packing to leave for a weekend away ________ my daughter heard cries for help.[     ]
A. after
B. while
C. since
D. when

题型：同步题难度：| 查看答案

Make full use of your time ________ you can achieve what you desire. [ ]
A. so
B. or
C. but
D. and

题型：同步题难度：| 查看答案

She had just finished her homework ________ her mother asked her to practise playing the piano
yesterday.[     ]
A. when
B. while
C. after
D. since

题型：同步题难度：| 查看答案

—I wonder how much you charge for your services.
—The first two are free ________ the third costs $30.[     ]
A. while
B. until
C. when
D. before

题型：同步题难度：| 查看答案