---I need some fresh air, so I’m going out for a walk.
---_______!
| A．Have fun | B．With pleasure | C．My pleasure | D．It’s none of my business |
_______ about wild plants that they decided to make a trip to Madagascar for further research.
| A．So curious the couple was | B．So curious were the couple |
| C．How curious the couple were | D．The couple was such curious |
My father has worked for 20 years in the field of medicine, so he has_______ a huge amount of experience.
| A．achieved | B．piled | C．completed | D．accumulated |
My grandfather is always thinking for others. In other words, he is always ____.
| A．modest | B．cautious | C．considerate | D．considerable |
_______caused the accident is still a complete mystery.
| A．What | B．That | C．How | D．Where |
Mary used to take _______ advantage of the lunch hour to have _______ short sleep in her office.
| A．/; the | B．the; the | C．the; a | D．/; a |