At present, 1 in every 10 people is aged 60 years or older, ______ in 2050, 1 in every 5 people will be aged 60 years or older.
| A．for example | B．in addition | C．whereas | D．also |
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 |
As he reached ___ front door, Jack saw ___ strange sight.
| A．the;/ |
| B．a;the |
| C．/;a |
| D．the;a |