if only he here空白处填was还是were?参考书是 were ,为什么啊.he不是第三人称单数吗,那为什么要用复数呢?还有什么情况这样用呢

if only he here空白处填was还是were?参考书是 were ,为什么啊.he不是第三人称单数吗,那为什么要用复数呢?还有什么情况这样用呢 If he here before 10 o’clock,I shall see him空白处怎么填he 后面的该填什么 1.I w if he comes here. 在空白处填单词,使对话完整：J：What are you going to do this summer ?A:I've no idea . I might go back to the USA, or I could ____ here and look for a summer job .And you ?J:I'm not sure ,eigher .My brother might ____ here . If he does He down from the ladder 填空白处 here is W( ) he said 空白处填句子 空白处怎么填? 空白处怎么填 空白处怎么填? 空白处该怎样填? 空白处怎么填? 空白处怎么填? 空白处填什么? 空白处怎么填? 空白处怎么填, 填空白处, 填两个空白处.