1 . How ________(use) the computer is a question. (所给词的适当形式填空)

2 . lt is quite necessary _________ (read) it again. (所给词的适当形式填空)

3 . ________ (read) English novels this evening will take most of my time. (所给词的适当形式填空)

4 . It’s been an honor ________ (watch) the panda programme develop and to see the pandas settle into their new home. (所给词的适当形式填空)

5 . It must be great fun ___________(fly) to the Mars in a spaceship. (所给词的适当形式填空)

6 . It was important for us ________(live) a low-carbon life. (所给词的适当形式填空)

7 . ________(change) bad habits is never easy, even with many attempts. (所给词的适当形式填空)

8 . For years Hainan has been developing its tourism industry, which aims ________ (turn) the island into an international tourist destination. (所给词的适当形式填空)

9 . ________ (strengthen) the connection with young people, the event included a number of public promotional activities on social media, ________ (invite) twenty­nine tea professionals from around the world to have thirty­six hours of uninterrupted live broadcasts. (所给词的适当形式填空)

10 . John was the first person ________ (think) of making popcorn to help Bernard earn some extra money. He was convinced that he had the ability ________ (help) Bernard out of the difficulty. (所给词的适当形式填空)