I paid him 300 Yuan for the sneakers.— Oh.he charged you too much. You _______ them with half money. [ ]

__________ there are a large number of chemical factories，the air is likely to be polluted.

Are you satisfied with her work, sir?—Not at all. It couldn’t be any _______.

I wish you ____________him my telephone number, but you did.

Where should I send my form —The personnel office is the place ________.