Having retired(退休), he ______ the club for old men and plays chess every day there.
| A．takes part in | B．joins in | C．attends | D．joins |
Progress __________ so far very good and we are sure that the work will be finished on time.
| A．was | B．had been |
| C．has been | D．will be |
For many years, people __________ electric cars. However, making them has been more difficult than predicted.
| A．had dreamed of | B．have dreamed of |
| C．dreamed of | D．dream of |
—I'm sorry, but I don't quite follow you. Did you say you wanted to return on September 20?
—Sorry, I __________ myself clear. We want to return on October 20.
| A．hadn't made | B．wouldn't make |
| C．don't make | D．haven't made |
I have to see the doctor because I __________ a lot lately.
| A．have been coughing | B．had coughed |
| C．coughed | D．cough |
When you are home, give a call to let me know you __________ safely.
| A．are arriving | B．have arrived |
| C．had arrived | D．will arrive |