Three days after the aircraft went missing, an international effort ________ ships and planes hasn't found any wreckage, ________ growing frustration for the families of the 239 people on board.
| A．involved; causing | B．to involve; caused |
| C．involving; causing | D．involving; having caused |
. ___ Mr Morgan appears extremely cheerful in public, he is in fact leading a very unhappy life.
| A．While | B．When | C．As | D．Since |
------I have just had my watch repaired.
------How much did they ____ for that?
| A．cost | B．charge | C．spend | D．pay |
Speaking of all the songs he has written, I think this is probably his ____ one.
| A．better-known | B．well-known | C．best-known | D．most-known |
On hearing the _____ news that they had won the match, they shouted with joy in _____ voices.
| A．exciting, exciting | B．excited, excited | C．excited, exciting | D．exciting, excited |
------How did you sleep last night?
------Like a log. Never slept___.
| A．bad | B．worse | C．well | D．better |