What I value most for a holiday is________I relax myself after the heavy work.
| A．that | B．how |
| C．when | D．what |
30.The problem lies in ______ the mist may become a thick fog , making the situation even worse.
| A．that | B．which | C．what | D．that whether |
29. Do you think ______ possible for her to work out the difficult problem all by herself?
| A．this | B．that | C．her | D．It |
28. There is no doubt ______ you will be successful in time as long as you study hard.
| A．whether | B．if | C．that | D．What |
27. He often thinks of ______ he can do more for his country, so he is highly spoken of by the people throughout the country.
| A．what | B．that | C．how | D．Whatever |
26. Word has come ______ the Chinese football team has failed again, _______ makes many football fans frustrated.
| A．that; that | B．what; what | C．which; that | D．that; which |