As environmental pollution is threatening human beings as a whole, it’s high time countries throughout the world ________ the problem on a global scale.
A.considered B.consider C.are considering D.have considered正确答案A
As environmental pollution is threatening human beings as a whole, it’s high time countries throughout the world ________ the problem on a global scale.
A.considered B.consider C.are considering D.have considered正确答案A
