1.Tag the bottles now or we'll forget which is which.

1.把这些瓶加上标签，否则话，我们就忘了哪个哪个了。

2.The twins are so alike I can’t tell which is which.

2.这一对双胞胎长得一模一样，我分不清谁谁。

3.We do not know which behavioural traits are inherited and which acquired.

3.我们不知道哪些行为特征遗传，哪些养成。

4.The twins are so alike that I can't tell which is which.

4.这对双胞胎一模一样, 我分辨不出谁谁。

5.A human ", "which will tranquilliser Friday!

5.极通人性“星期五”哪肯束手就擒！

6.Which book do these quotations come from?

6.这些引文出自哪本书？

7.That is the house which I built.

7.那我建房。

8.African bands which are big in Britain.

8.英国深受欢迎非洲乐队。

9.CFA registered Cattery which breeds British shorthair.

9.- CFA登录猫场，专门繁殖英国短毛猫。

10.Which category does this item fall under?

10.这一项目应归入哪一类?

11.Which subjects are compulsory in your school?

11.你们学校里， 哪些课程必修？

12.Which driver was to blame for the accident?

12.哪位司机这次事故肇事者？

13.Amplifier is electrical device which make sounds louder.

13.扩音器一种使声音放大电气装置。

14."Most Sunday papers have comics, which children enjoy."

14."多数星期日报登载滑稽或笑话,这孩们所喜欢。"

15.It was a disappointing performance which lacked finesse.

15.那场演出缺乏技巧,令人失望。

16.Which of the two films did you like?

16.Neither！

17.You have a scant hour in which to pack.

17.你有一小时来整理行李。

18.Take the sickle which is lying on the grindstone.

18.把磨刀石上那把镰刀拿去。

19.Los LLanos, which are large plains with magnificent rivers.

19.洛斯拉诺斯，这一片拥有壮丽河流大平原。

20.She asked which of the two lamps shone brighter.

20.她问这两盏灯哪一盏照得更亮。