I ___ an article about first aid. It’s useful in emergency situation.
| A．read | B．saw | C．looked | D．watched |
It is helpful to _____ a good habit of reading in language learning.
| A．take | B．show | C．develop | D．match |
Oh, it ___so nice. What beautiful music it is!
| A．smells | B．sounds | C．tastes | D．looks |
—Someone is knocking at the door. Is it Ann?
—It ________ be her. She is giving a performance at the theater now.
| A．may | B．must | C．can't | D．mustn't |
—Must we clean the room at once?
—No，you ________.You can do it after school.
| A．mustn't | B．needn't | C．can't | D．may not |