—How was your recent trip to Sichuan?
—I've never had __________ one before.
| A．a pleasant |
| B．a more pleasant |
| C．a most pleasant |
| D．the most pleasant |
31. I tried to telephone you, but I couldn’t ____________.
| A．look through | B．go through | C．see through | D．get through |
30. They are shocked to find that in this town the traffic rules are not strictly ________.
| A．noticed | B．recommended | C．observed | D．concerned |
29. ---Let’s make it next Monday or Tuesday if it’s convenient for you.
--- _____ day is OK. I’m free all the time.
| A．Some | B．Both | C．Either | D．Neither |
28. It is suggested that the project ______ until all the preparations have been made.
| A．is not started | B．won’t be started |
| C．isn’t to be started | D．not be started |
27. How can you expect him to make any progress ____ you never give him a chance to have a try?
| A．when | B．unless | C．even though | D．until |