— It’s dangerous to walk across the street carelessly.
— You’re right. We can’t be careful while crossing the street.
| A．so | B．very | C．too | D．more |
Tomorrow is the boy’s ________ birthday.
A. seventh B. seven C. seventeen
Speak louder, please. I can’t ________ you.
A. see B. hear C. write
—How long may I keep the book?
—You ________ keep it for two weeks.
A. may B. must C. will
The flowers smell ______.
A. well B. badly C. good
Mrs. Smith has _____ son and a daughter.
A. a B. an C. the