3. In the past twenty years, a large number of bamboo areas ______________ (set up) to help pandas grow.
举一反三
- Over the past five years, the number of Chinese world travelers ________ (grow) to 120 million people.
- In the past ten years, some national parks _________ to protect the wildlife. A: are set up B: were set up C: has been set up D: have been set up
- Conservationists are trying to set up “bamboo corridors” in order that ________.
- In the past few years my aunt ___________ enough money to buy a house. A: has saved up B: has kept up C: has set up D: has saved aside
- Over the past few years, Over the past few years,<br/>these companies have been able to maintain a steady (grow)<br/>______ <br/>in their business.