People were not allowed to enter thereading room because it

Tom’s mother was _________ angry at the news that she could hardly say a word

At least 300 million people areusing QQ_____ by Ma Huateng to chat online.

Mount Xiaolei is not far away from here, but it will still take us a few hours ______ there by bike.

It’s time you changed your attitude ___ your studies, for the time is running out