A clean environment can help the city bid for the Olympics, which in return will _____its economic development.
| A．add | B．increase |
| C．promote | D．plus |
I’m not ill. __________, I ’m very healthy.
| A．However | B．On the contrary | C．Thus | D．Instead of |
We do not permit _________ in the office.
| A．to smoke | B．to smoking | C．for smoking | D．smoking |
I believe that Mary hurt her boyfriend’s feelings on purpose rather than __________ as she said.
| A．in advance | B．by accident | C．on purpose | D．for sure |
__________ makes the school famous is __________ more than 90% of the students have been admitted to universities.
| A．What; because | B．That;because | C．That; what | D．What;that |
We hope to finish our experiment________.
| A．long before | B．fast | C．before long | D．fastly |