28．—Surely you can turn to David for help．
—__________He is the last one you can depend on．
| A．I couldn’t agree more. | B．Is that right? |
| C．Get out of it! | D．It’s up to you． |
Some people hold the view that the new machine is advanced, while others are still skeptical _____ whether it is of practical use.
| A．with | B．about | C．for | D．on |
According to the engineer, there remain some tests _____ before the machine is put into operation.
| A．carrying out | B．carried out | C．being carried out | D．to be carried out |
-- Can you lend me the book Twilight by Stephenie Meyer?
-- Sorry. I returned it to the library just now. Maybe it is still _____.
| A．available | B．affordable | C．acceptable | D．valuable |
All Chinese people deserve equal opportunities to enjoy _____ prosperous (富裕的) life, see their dreams come true and benefit together from _____ country’s development.
| A．a; 不填 | B．the; a | C．a; the | D．the; 不填 |
--Sorry, it's already 6 o’clock. I have to be off for an appointment.
--OK. ________.
| A．It couldn’t be better | B．You really have me there |
| C．Let’s call it a day | D．Take your time |