i think by five o'clock the children ()from their work.A.will return B.had turn C.will have return

I think ( ) about five o'clock. i think by five o'clock the children ()from their work.A.will return B.had turn C.will have return by the time of five与 by five o‘clock一样吗 It is five o'clock by the blue watch. 1._____is your grandmother?She'sabout sixty -five,I think. 请问:五点以前这两种翻译有何区别：by five o'clock.before five. i think you should understand by yourself? 元素周期表中O CL电离能大小如何比较C N CL Br I O CL又如何比较 Aftre five years of study,I think I can speak English wellAftre five years of study,I think I __ __ __ __speak English well改同义句 o,clock I at home five go连词成句 I will work ( ) five o'clock.(until,up) I will work ( ) five o'clock.(until,up)选一个 I will work .five o 'clock.中.可不可以填until i get home at five o'clock 改为一般将来时 请问单质O,I,Br,Cl的氧化性顺序 1.i think i'll ride my bike.2.if you do ,you'll be late.3.i think i'm going to stay at home.4.if you do,you'll be sorry.5.how long have you been skating.6.i've been skating for five hours.7.i've been skating since nine o'clock.8.how long did you skat -----the end of last term ,everybody here in the school.I think has taken at least five English tests.A.by B.since C.from D.at答案选B 为什么? 英汉译i think i willi think i will killed by the women.