--Millie hardly did the housework after she bought the robot，____?
-- ____．She could relax and have time for her hobbies．
| A．did she; Yes | B．didn't she; No |
| C．didn't she; Yes | D．did she; No |
There's no way of knowing why the man fails，____ he is always hard-working and wise．
| A．when | B．although |
| C．if | D．unless |
--Shanghai Pudong Airport please! I must get there by 7．
--____，but I'll try my best．
| A．No problem | B．All right |
| C．I can't promise | D．I can't do that |
The research group ____ 15 members has made great achievements in recent years．
| A．is made up of | B．makes up |
| C．made up of | D．making up of |
When the star fell ____ the darkness quickly at night，all the people felt it amazing．
| A．down | B．off |
| C．behind | D．through |