时态高阶练习之现在时态相关

Besides their obvious monetary value, they all carry their own cultural value as well. For example, on the back of the 5-yuan banknote_________________(be)Taishan Mountain in Shandong.

Producing a paper bag____________(use) four times as much energy as producing a plastic one.

Two thirds of the region__________(pollute) in the past decade.

So far, Quanzhou__________(launch) many cultural tourism projects, making great progress in digging into the culture and value of the Maritime Silk Road to boost the high-quality development of the region.

She __________ (practise) the piano since breakfast, and her fingers are starting to ache.

We are now living in a fast-developing society and our life conditions____________(improve) day by day