用“which is which”造句大全，which is which造句

The twins are so much alike that I never knew which is which.

Who says which is which

In the absence of good scientific trials, it is impossible to be certain which is which.

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

Can you tell which is which?

Mary and Susan are twins and I can't tell which is which.

They are so alike, I can't tell which is which.

Now which is which?

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

The kittens look exactly alike—how can you tell which is which ?