Glad to meet you and here is my card. Let’s keep in______ later.

In order to look after her sick daughter, the old lady asked for a week’s ________.

 At the meeting they discussed three different     to solving the problem.

The tutor（导师）asked his students to leave a wide ________ when typing their essays.

Thanks to the vivid ______, the speaker made the abstract concept accessible to all the audience.