______ China has made great efforts to ensure the survival of the panda, it is still in danger of extinction.
Chọn đáp án D
I do not want to hear any more complaints. I have got enough problems ______ it is.
The whole country was very upset ______ the President was assassinated.
______ my mother was cooking in the kitchen, my father was working in the garden.
It was such a boring film that we left the movies before it ended.
Tony had little difficulty in passing the examination, ______ he has a very good foundation in English