Teaching pronunciation class to a mixed group of learners can ________ a teacher with many challenging problems.
| A．provide | B．produce |
| C．present | D．offer |
It’s good to know _____ the dogs will be well cared for while we’re away.
| A．what | B．whose | C．which | D．that |
Volunteering gives you a chance____ lives, including your own.
| A．change | B．changing | C．changed | D．to change |
（2013·北京卷). makes the book so extraordinary is the creative imagination of the writer.
| A．That | B．What | C．Who | D．Which |
（2013·北京卷)Experts believe people can waste less food by shopping only when it is necessary.
| A．why | B．where | C．that | D．what |
Police have found ________ appears to be the lost ancient statue.
| A．which | B．where | C．how | D．what |