Hong Kong-Zhuhai-Macao Bridge， the world's longest sea based project， brings people in those three cities within "one-hour living circle"． A: a B: an C: the D: /

6.Which is not the longest living area in the world we have mentioned in Unit 4? A: Icaria, Greece B: Okinawa, Japan C: Hezhou, China D: Sardinia, Italy

The day is getting _____. A: long an long B: longest and longest C: longer and longer D: longer and longest

3. Thames River is the second longest river in Britain and the longest one is the Severn River.

The _____________ is China's longest river and the third longest in the world after the Nile and the Amazon. The _______________is the second longest river in China, contributing a lot to Chinese civilization, so it is called by anthropologists the “Cradle of Chinese______________”.

In 2020, the Hong Kong-Zhuhai-Macau Bridge is the longest cross-sea bridge in Asia and the second longest cross-sea bridge in the world.

The longest river in Britain is _____________.

( ) is the longest river in Britain.

Which one is the longest?

The longest metro in the world is in _____.