To test eggs, _______ them in a bowl of water: if they float they’re bad, if they sink they’re good.
| A．put | B．putting |
| C．to put | D．to be putting |
280. John _sat at the head of the table with his wife next to him. Which of the following can’t replace the underlined word.
| A．seated | B．seated himself | C．was seated | D．took a seat |
279. The man lay there, _________with a bad pain.
| A．scream | B．giggling | C．screaming | D．Humming |
278. My uncle, the boss of a shoe factory _____ me for a part-time shop assistant of the department store.
| A．introduced | B．wanted | C．hired | D．Recommended |
277. The policeman ________ the thief, caught him and took him to jail (prison).
| A．runs after | B．ran after | C．run after | D．ran out of |
276. Computer technology has _____ a revolution in business practices. Which of the following words is not suitable to be put in the blank?
| A．started | B．caused | C．brought about | D．Made |