21. _________ you encounter any problems regarding the new system, please notify the tech support ASAP.
(A)Might 
(B)Would 
(C)Should 
(D)Could

答案：登入後查看
統計： A(116), B(153), C(303), D(51), E(0) #537112

詳解 (共 2 筆)

#928601
Should you~  =  If you~
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#3466602
if you should  encou...
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