He made up his mind to devote all he could to _______the poor.
| A．help | B．helping | C．helped | D．helps |
30．The extra room________very useful when we had visitors．
| A．had been proved | B．was proved |
| C．had proved | D．Proved |
29．Don’t touch anything．Better leave things_________they are until the police arrive．
| A．before | B．that | C．as | D．While |
28．You can ask him again if you like，but it won’t make any __________he will still say no．
| A．point | B．use | C．result | D．Difference |
27．—I can’t find Fred．He is not at home．
—Why don’t try______him?
| A．phoning | B．to phone | C．phone | D．having phoning |
26．I like the feeling of being up high in the sky．I can’t think of anything_______in the world．
| A．best | B．better | C．worse | D．Worst |