________writing the article，the author forgot that he had a meeting to attend.
| A．Absorbed in | B．Absorbing at |
| C．To absorb in | D．Having absorbed by |
John thinks it won’t be long __________ he is ready for his new job.
| A．when | B．after | C．before | D．since |
— 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 |