2 . By the time he arrives, all the work________(complete), with which our teacher will be satisfied. (用所给词的适当形式填空)

3 . By the end of this year, the new buildings for the Olympic Games _______ (complete). (所给词的适当形式填空)

4 . Our boss is said to come back next week, ________ (那个时候我们的任务就完成了). （根据汉语提示完成句子）

5 . Hopefully, another ten volunteers will have been______________(挑选) to work in the new exhibition by the end of this week. (根据汉语提示单词拼写)

6 . As many as ten million children will have been____________ (infect) with the virus by the end of the decade. （所给词的适当形式填空）

7 . All the business letters ________(answer) by tomorrow. (所给词的适当形式填空)

8 . By the end of 2021, several other metro lines ______. （complete）(所给词的适当形式填空)

9 . As is estimated, more than 20 million shared bikes ______ into operation nationwide by 2025.

A．will have been put

B．will have put

C．have been put

D．will be putting

10 . They are trying to make sure that 5G terminals ________ by 2022 for the Beijing Winter Olympics.

A．will install

B．will have been installed

C．are installed

D．have been installed