Their idea sounds great. Which of the following is correct for the underlined word in the sentence

When the policeman stopped us, we all looked questioningly at him, ________.

____-Yes, please.1 want a hat.

They had a pleasant chat ________ a cup ofcoffee.

The total population of China _______ about 1300 million on January 6, 2005. And about eighty percent _______ still farmers. [ ]