After the arrival of the first humans into the uninhabited land, such large areas of forest were destroyed that many animals and plants became ______ , including the giant moa.
_______,but it is also a great way to lower the number of greenhouse gases in the air.
_______, his idea was accepted by all the people at the meeting.
So difficult _______it to work out the problem that I decided to ask Tom for some advice.
Seldom________as lonely as now though I have been living in Fuzhou for more than 20 years.
Only when their children leave home _________.