16. ---The farmer president was caught at last.
---Really? Where himself?
| A．had hidden | B．has he hidden | C．was he hidden | D．has he been hiding |
The cake is delicious. May I have ________ one?
| A．another | B．every |
| C．other | D．more |
John seems puzzled about ________ the question meant.
| A．how | B．why |
| C．what | D．which |
All his free time is ______ by volunteer work, but he feels it meaningful.
| A．put up | B．given up |
| C．picked up | D．taken up |
The athletes competed ________ each other for gold medals in the Olympic Games.
| A．against | B．between |
| C．for | D．over |
--Can a plane fly ________ the Atlantic Ocean?
--Yes, but it needs to go________ the clouds for hours.
| A．through; across | B．across; through |
| C．across; across | D．through; through |