—How old is Mary?—________.We had a special party for her________birthday yesterday.A.Twenty;twentythB.Twenty;twentiethC.Twenties;twentieth
Well, I have ________to tell you. Please keep quiet.
Eating a ________diet helps us to keep a _________of yin and yang.
This school is different ________ others. It has many out-of-class activities.
Thanks for________ me to go to your English party.
—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.