A．devoted

　　B．devoting

　　C．to devote

　　D．and devote

　　18．There is no doubt ______ international cooperation is key to ______ with cybercrime，as Vinton Cerf has said that the problem of cybercrime is ______ huge that it requires UN to form a special agency to act as an international referee or steward.

　　A．whether；doing；so

　　B．that；dealing；so

　　C．whether；dealing；such

　　D．that；doing；such

　　19．When he returned from his vacation，he found his apartment ______ with a lot of things ______.

　　A．breaking into；stealing

　　B．broken into；stolen

　　C．breaking in；stolen

　　D．broken in；stealing

　　20．Dr.Johnson，______ a portable computer in his hands，hurried into his office and ______ it on to get online for information he needed.

　　A．carried；turned

　　B．carrying；turning

　　C．carrying；turned

　　D．carried；turning

　　21．In these months there have happened many disasters in the world，______，I think，are the results of global warming.

　　A．what　

　　B．that

　　C．they 　D．which

　　22．We have gathered nearly 100,000 quilts，______ up to half have gone to the flood­hit areas.

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