In the 21st century, all nations must take their ________of responsibility for the global safety.

33It has escaped mewe stopped in the last classTom，would you tell me so that I can go on with my lecture?

下列翻译正确的一项（ ）

He slipped and broke his leg_________, he will have to be away from school for two or three months

lassroom is big enough ____, but we’ll have to move if we have more students.