下列单词中ai字母组合发音不同的选项是:___________
A. said B. rain C. main
—Must I hand in my homework today? —No, you _________.
A. must B. mustn't C. needn’t
— Your new car looks so nice! — Thanks! But I _________ for five years.
A. have bought B. have had C. bought
________ in the sun. It’s bad for your eyes.
A. Read B. Don’t read C. Reading
Look! There _______ a dog and two balls behind the door.
A. is B. are C. was
Lucy often _________ newspapers on her way home from school for her father.
A. is going to buy B. buy C. buys