87、Because of noise outside,Nancy had great difficulty________(集中注意力在实验上). 88、The manager never laughed;neither________(她也从来没有发过脾气). 89、We look forward to____________________( 被邀请出席开幕式). 90、It is suggested that the air conditioner ____________________(要安装在窗户旁边). 91、The 16 year old girl decided to travel abroad on her own despite______(她父母的强烈反对). 参考答案 87、focusing on the experiment 88、had temper before 89、being invited to attend the opening ceremony 90、is to be installed next to the window 91、her parents' strong opposition
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