Mr. Zhang once taught in a remote village in Anhui province as a volunteer, which was ______ only on foot.
——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.
, a good idea occurred to him.
Not until he retired from teaching three years ago having a holiday abroad.