2018--2019学年人教版必修二Unit 4 Wildlife Protection Learning about language课时作业(15)
2018--2019学年人教版必修二Unit 4 Wildlife Protection Learning about language课时作业(15)第1页

Unit 4 Wildlife Protection课时作业

Learning about language

Ⅰ.用所给词的适当形式填空

  1.Most of the waste metal can______(put) to use again.

  2.Electricity__________(discover) two thousand years ago.

  3.This part of the seabed__________(explore) many times.

  4.Much useful information about these planets__________(collect) since 1971.

  5.Outer space__________(not explore) by people before 1957.

  6.Much parking space in cities__________(save) by using small cars.

  7.The first railway in the world__________(design) in the last century.

  8.Computer science__________(teach) now almost in all universities and institutes.

  9.Five units of this textbook__________(study) by the end of last month.

  10.In this school English__________(teach) through TV.

  答案

1.be put 2.was discovered 3.has been explored 4.has been collected 5.hadn't been explored 6.will be saved/has been saved/is saved 7.was designed 8.is being taught 9.had been studied