.
Mary had to work at evenings and weekends. Only in this way _____ complete the reports by the deadline.
| A．was she able to | B．she was able to |
| C．she has been able to | D．has she been able to |
-- Could you be so kind as to close the window?
| A．With pleasure | B．Go ahead |
| C．Yes, please | D．That's OK |
Just as Professor Scotti often______ it, success is ninety-nine percent mental attitude.
| A．gets | B．makes |
| C．puts | D．means |
-- Do you think it's a good idea to make friends with your students?
-- _____ , I do. I think it's a great idea.
| A．Really | B．Obviously |
| C．Actually | D．Generally |
Daniel's family____their holiday in Huangshan this time next week.
| A．are enjoying | B．are to enjoy |
| C．will enjoy | D．will be enjoying |
– I wonder how much you charge for your services.
-- The first two are free ____ the third costs $30.
| A．while | B．until |
| C．when | D．before |