1 . 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

2 . It’s reported that by the end of this year, huge quantities of good earth ______ due to deforestation.

A．will have been washed away	B．is being washed away
C．are being washed away	D．will have washed away

3 . Hopefully in 2025 we will no longer be e-mailing each other, for electronic communication tools ______ more convenient by then.

A．have developed	B．have been developed
C．will have been developed	D．will have developed

4 . By the end of 2020, as is clearly stated, poverty relief work ________ across the country.

A．will have accomplished	B．has been accomplished
C．has accomplished	D．will have been accomplished

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

6 . 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

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

8 . By the time you come back next year, the new house ________ (build) with the workers’ joint efforts.（所给词的适当形式填空）

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

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

A．will be installed	B．will have been installed
C．are installed	D．have been installed