11. The public has complained that large quantities of waste water ______ into rivers without being cleaned, so large amounts of money ______ to solve the problem.
| A．have poured; is needed | B．has poured; are needed |
| C．have been poured; is needed | D．have been poured; are needed |
The Korean government plans to import Chinese cabbage from China, as the recent rainstorm has______ the price.
| A．driven up | B．taken up | C．set up | D．looked up |
You should be more confident in______ situation is challenging you.
| A．wherever | B．whenever | C．however | D．whatever |
The Chinese mainlanders from selected cities are allowed to visit Taiwan______ individual tourists.
| A．within | B．as | C．for | D．like |
Neighbors said they heard the man tell the woman that she couldn’t leave______ she gave back the money borrowed from him.
| A．unless | B．since | C．if | D．though |
The price of gold has jumped to______ new all-time high as debt worries in the US and ______ Europe continue to trouble the world.
| A．the; / | B．the; the | C．a; / | D．a; the |