---How many students are there on the playground? ---_________.

Who________ will go there with me?.

______ is too difficult if you put your heart into it.

We find     impossible forus tolearna foreignlanguage wellina shorttime.

Peter enjoyed _______ at his birthday party last night.

— Who will teach _______ oral English next term? Can it be a new teacher?
— Perhaps. But our head teacher hasn't told us ________ .

—Hi, I have passed_____ exams!
—Oh, congratulations! I hope my sister has also passed______.
A. mine, her      B. mine, hers      C. my, her    D my, hers

—Who helped you repair your bike?
—________ ! I repaired it all by myself.

–Your bedroom is dirty. Please tidy _____ up.
-Ok, mum.
A. it           B. its                 C. them                

—________that China has the largest number of iphone4s users now.
— I believe so.