—Could you help me work out the maths problem, Mrs Zhao? — . What is it?
—Which one of these T—shirts do you want? —______,Either will be OK.
The first thing ______ I am going to do this evening is to go to sleep.
Mother’s Day is coming, I’m thinking about ________
__________ good advice the teacher gave me!
The traffic was busy on our way to the train station, _____ we caught the train on time at last.