Giving up smoking______the risk of heart disease.
| A．reduces |
| B．collect |
| C．increase |
| D．warn |
It remains to be seen ________ the newly formed committee's policy can be put into practice.
| A．that | B．which | C．what | D．whether |
It's good to know________the dogs will be well cared for while we're away.
| A．what | B．whose | C．which | D．that |
________ one of you breaks the window will have to pay for it.
| A．Whoever | B．Whatever |
| C．Whichever | D．Wherever |
Do not let any failures discourage you, for you can never tell______close you may be to victory.
| A．how | B．that | C．which | D．where |
________makes the book so extraordinary is the creative imagination of the writer.
| A．That | B．What | C．Who | D．Which |