Some teenagers turn a deaf ear to their parents’ advice, ________ they know it does good to them.
—I drove to Zhuhai for the air show last week. —Is that ________ you had a few days off?
It is generally considered unwise to give a child ________ he or she wants.
________ made the school proud was ________ more than 90% of the students had been admitted to key universities.
—You can't imagine ________ fantastic fun online chatting is. —Really?But it may cause a lot of trouble sometimes.
It is pretty well understood ________ controls the flow of carbon dioxide in and out the atmosphere today.