1 . Mum ________ if ________ Jonny behind.
要是我撇下乔尼, 妈妈肯定会不高兴的。

2 . 要不是那三集纪录片,外面的人永远也不会知道,在这里工作的那些衣着朴素的人竟然都是精于各门技艺的大师,他们毕生都在修复珍贵的古董。
If it hadn't been for a three-episode documentary, outsiders _____ _____ _____ _____ that the plainly-dressed people working here are masters of their craft, who have _____ _____ _____ _____ precious antiques

3 . 但是阿利斯泰尔为自己的决定给出了简单的解释：“如果我把乔尼落下，妈妈会不开心的。”
But for Alistair, his decision ________：“Mum________ if I’d left Jonny behind.”

4 . If the rules of perspective had not been discovered, no one _______ paint such realistic pictures. (根据句意填空)

5 . 两位陌生人交谈着像是多年的朋友。(汉译英)
_______________________________________________________________________________________________

6 . 父亲耐心地指导了这对双胞胎。否则，他们就不会做出如此美味的早餐了。
The father patiently guided the twins. ________________.

7 . 眼睛盯着天花板，我想：如果我当时努力学习诗歌的话，肯定会成为诗人。(with结构；虚拟语气)
________________, I thought, if I had worked hard at poetry, I________________.