—Look!Some people are running the red lights．
—We should wait________others are breaking the rule．
| A．if |
| B．unless |
| C．although |
| D．because |
Italy is famous for ________.
| A．the Eiffel Tower | B．the Tower Bridge |
| C．the Leaning Tower of Pisa | D．The Little Mermaid |
My brother has never been late for work, __________?
| A．is he | B．isn’t he | C．has he | D．hasn’t he |
This is a cheap and simple process(过程), ____ ,there are dangers.
| A．but | B．so | C．because | D．However |
Have you returned the book to the library ____?
--- Yes, I have ____ returned it.
| A．yet, yet | B．already, already | C．already, yet | D．yet, already |
When the teacher came in , the students about the new film .
| A．are talking | B．were talking | C．talked | D．talking |