We plan to reach the North Pole in mid-July, and by then we _______ for six weeks.
| A．are walking | B．have been walking |
| C．will be walking | D．will have been walking |
All her time _______ experiments, she has no time for films.
| A．devoted to do | B．devoted to doing |
| C．devoting to doing | D．is devoted to doing |
There is a new problem involved in the popularity of private cars _______ road conditions need _______.
| A．that … to be improved | B．which … to be improved |
| C．where … improving | D．when … improving |
Let’s observe another little scene, ________you might have in your new life to come.
| A．what | B．as | C．where | D．that |
I felt it a great honour ______ to speak to you.
| A．to ask | B．asking | C．to be asked | D．having asked |
Tony was very unhappy for _______ to the party.
| A．having not been invited | B．not having invited |
| C．having not invited | D．not having been invited |