【判断题】定期对计算机重新安装系统是预防计算机病毒感染有效的措施。
【单选题】_____ they may not succeed, they will try their best.
【判断题】定期对计算机重新安装系统是预防计算机病毒感染有效的措施。
【单选题】-They say that they will try their best _their dreams.
【单选题】______ they may not succeed, they will try their best.
【单选题】They will try their best in the Dragon Boat Racing ________ they may fail. [ ]
【单选题】They will try their best in the Dragon Boat Racing _______ they may fail.