don’t think you can work out the maths problem＿＿＿＿her help.
| A．since | B．unless | C．with | D．without |
It’s hard to tell real Jingdezhen vases, and it’s a little more difficult for the untrained shopper to______.
| A．dismiss | B．distinguish | C．seek | D．shelter |
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 |