—Shall we go to the market to get some apples?—Look!It ______rain.Let’s make it another time.
In the 21st century, all nations must take their ________of responsibility for the global safety.
-----How good the news is for you! ------ ______________.
What worried the mother most was __________ the Internet after class in this school.
------- Jack, you erase the blackboard today, __________? ------- But I did it yesterday.
To me, cycling at ___ altitude of more than 4,000 meters was _____ unforgettable experience.