I can’t find you．
I don't know________ ， I’m on the left side of a tree．（ ）
A．who I amB．who am IC．where I amD．where am I
Bill is running so fast!I _________believe my eyes.（ ）
A．needn'tB．shouldn'tC．mustn'tD．can't
There __________two people waiting for you outside now.（ ）
A．isB．areC．wasD．were
My cousin keeps two pets.One is a lovely cat and ___________ is a beautiful bird.（ ）
A．otherB．othersC．the otherD．another
We used to buy things in the ____________ but now we usually do it online.（ ）
A．shopB．museumC．bankD．library
Tom thinks playing ___________basketball is a good way to relax himself.（ ）
A．aB．anC．theD．/