Millions of people felt ______ amazed at the news that Steven Hawking joined Sina Weibo.

Michael be a policeman, for he is much too short．

______ boys and girls in that school are almost equal, of which the headmaster is proud.[ ]

The elderly need special care in winter, as they are to the sudden changes of weather.

一What does the sign over there read?一“No person ______ smoke or carry a lighted cigarette, cigar or pipe in this area.”