问题

Latest researchers show children _______ with high levels of air pollution during their first year of life run a great risk of developing certain disease[ ]

A: to be associated
B: being associated
C: having been associated
D: associated

正确答案是：

同类题型

One-third of the country ________ covered with trees and the majority of the citizens _______ black people.

─ Is __________ the capital of Canada─ Yes, it is.

The company wants to _______ a school for the poor children.

With the police _______ the traffic, we could get back home safely in such bad weather.

The old town has narrow streets and small houses ________are built close to each other.