People try to avoid public transportation delays by using their own cars, and this ____ creates further problems.
| A．in turn | B．in all | C．take turns | D．by turns |
Ted came for the weekend wearing only some shorts and a T-shirt, ___ is a stupid thing to do in such weather.
| A．this |
| B．that |
| C．what |
| D．which |
Mr. Stevenson is great to work for-I really couldn’t ask for a ___ boss.
| A．better |
| B．good |
| C．best |
| D．still better |
The island, ___ to the mainland by a bridge, is easy to go to.
| A．joining |
| B．to join |
| C．joined |
| D．having joined |
If you ___ smoke, please go outside.
| A．can |
| B．should |
| C．must |
| D．may |
I wasn’t sure if he was really interested or if he ___ polite.
| A．was just being |
| B．will just be |
| C．had just been |
| D．would just be |