More and more dangerous work _____________ by robots in ten years.A is finished B was finishedC will be finished D has been finished
Now the weather is becoming ___________ , we should look after ourselves well.
About seventy percent of the earth with water.
Lots of students are_________ in tigers and other wildlife.
Why does Liu Tao look all day long?
Our English teacher often asks us_________ English _____in class.