The police were seeking more information to find out ____ the rich merchant.

Where did you pick up the news？——It was in the supermarket _____we shopped serval days.

I will have the final exam(考试) next week.－I _____ you ________ good luck.

The openair celebration has been put off ________ the bad weather.[ ]

Could you give me a hand- Well, please tell me_______ it is first.