The two girls are so alike that strangers find_____ difficult to tell one from the other.
| A．it | B．them | C．her | D．that |
— I’m going to Paris next week.
— What a ________! So am I.
| A．pity | B．coincidence | C．accident | D．chance |
Exploring ________ space is exciting, yet dangerous. There is _______need for both robots and humans for space exploration.
| A．the; a | B．a; the | C．/; a | D．/; / |
It is difficult to imagine his ______ the decision without any consideration.
| A．accept | B．accepting | C．to accept | D．accepted |
It is worth considering what makes “convenience” foods so popular, and ______ better ones of your own.
| A．introduces | B．to introduce | C．introducing | D．introduced |
Bill suggested ______ a meeting on what to do for the Shanghai Expo during the vacation.
| A．having held | B．to hold | C．holding | D．hold |