题目内容
23、Every possible means _______ to prevent the crash , but the computer doesn’t still work．
A．is used B．are used
C．has been used D．have been used
试题答案
23、C
相关题目
Every possible means _______ to prevent the crash , but the computer doesn’t still work．
|
A．is used |
B．are used |
|
C．has been used |
D．have been used |
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Every possible means _______ to prevent the crash , but the computer doesn’t still work．
- A.is used
- B.are used
- C.has been used
- D.have been used
Every possible means _______ to prevent the crash , but the computer doesn’t still work．
A．is used B．are used
C．has been used D．have been used
查看习题详情和答案>>