In face of _____failure, it is the most important to keep up _____ good state of mind.
________ I always felt I would pass the exam, I never thought I would get an A. A. While B. Once C. If D. Until
The air quality in the city, ______ is shown in the report, has improved over the past two months.
——Look at those clouds! ——Don’t worry. it rains, we will still have a great time.
I am listening to music while he is surfing the Internet.
To , we didn’t have breakfast.