I didn’t ________ my primary school classmate Jane until I listened to her self-introduction.
As we joined the big crowd, I got ________ from my friends.
________ theme of the Shanghai Expo is “Better city, better life”. It will send _____ message to people around the world to care about the places where they live.
Please leave your phone number ______ we can get in touch with you in case of emergency.
They demanded that the books ______ to the school library right away.
The trade union intended to call on the workers to go on strike ______ the government’s limitation on exports.