— I’ve taken someone else’s green sweater by mistake.
— It ______ Harry’s. He always wears green.
| A．has to be | B．will be | C．mustn’t be | D．could be |
29．He turned down the request of his friend because it was________the limit of his power.
| A．beyond | B．over | C．off | D．Above |
28．After driving for five hours, they arrived at_______they thought was the place th ey had been dreaming of.
| A．what | B．that | C．which | D．Where |
27．If you had worked hard, you ______ so anxious now．
| A．are not | B．would not have been |
| C．will not be | D．would not be |
26．______ I'm willing to help, I do not have much time available．
| A．While | B．When | C．Once | D．Since |
25．The rise of oil prices made scientists search for new energy resources ______ oil．
| A．replace | B．replacing | C．to replace | D．Replaced |