She couldn’t help, even though she tried not to, ____ at the strange clothes her friend was wearing.
| A．to laugh | B．laugh | C．laughing | D．laughed |
I am _____ about what I say because careless remarks are likely to hurt others' feelings．
| A．enthusiastic | B．concerned | C．doubtful | D．cautious |
Apple's iphone4S disappointed its fans，its later success was beyond what people could expect．
| A．When | B．As | C．Unless | D．While |
With the nuclear crisis worsening in Iran, the world's attention is fixed again onis called the Middle East．
| A．which | B．that | C．what | D．it |
William found it increasingly difficult to read，for his eyesight was beginning to．
| A．disappear | B．fall | C．fail | D．damage |
Studying abroad costs so much money that it isthe reach of those with average income．
| A．below | B．over | C．within | D．beyond |