build；successful；chat with；be famous for；a great deal of； in danger；carry out；stand for；lose heart；be interested in

（1）Don't 　     　，Sam.You will succeed next time.

（2）Our city is beautiful.It 　       Mount Huaguo since a long time ago.

（3）—What are Paul and Bob doing these days？

        —They 　          　 a survey of after﹣school activities.

（4）It took Lisa 　               time and effort to complete the project.

（5）—What's WWF exactly，Millie？

        —It 　             　 World Wide Fund for Nature.

（6）After weeks of space travel，Chang'e 5 　       　brought back rocks from the moon.

（7）Three new schools 　      　 in our hometown next year，won't they？

（8）Today more and more foreign people 　             　 Chinese folk music.

（9）It's reported that polar bears are 　      　 because of global warming （全球变暖）.

（10）—Why weren't you in the room at 10 o'clock this morning，Betty？

          —Oh，I 　    　my grandma in the garden.