—Tom, you look tired this morning. What’s wrong?—I was so busy that I didn’t go to bed________12 o’clock last night.

Money is important ____________ it’s not the most important thing.

---You look very healthy. ________do you exercise? -----I exercise three times a week. 

 Although it was very cold,            he went out without an overcoat.

—You won’t pass the oral English test ______ you practise speaking more．—I am sure that I will be the best．Don’t worry，mum．