I don’t think he will pass the exam,________? [ ]

Dad, my trousers are old. I want to buy a new .

It is very merciless _____ you to have _______ the homeless tramp in a worn-out coat when hebegged something to eat.[ ]

at Mount Huangshan is a beautifulscene, I’ll never forget.

________Switzerland (瑞士) is very small , _______it is the land of watch and it is very rich.