Professor Backman took up scientific research for decades，and this is________he devoted all his life to.
|
A．which |
B．what |
|
C．where |
D．how |
Sorry I’m so late，but you cannot imagine________great trouble I took to find your house.
|
A．what |
B．how |
|
C．which |
D．why |
Water，which seems so simple and common，is________makes life possible.
|
A．what |
B．that |
|
C．which |
D．how |
—You know，I’m poor in Chinese，you are not good at English，and...
—That’s________we should help each other.
|
A．when |
B．where |
|
C．how |
D．what |
_______hungry I am，I never seem to be able to finish off this loaf of bread.
|
A．Whatever |
B．Whenever |
|
C．Wherever |
D．However |
The magnificent tower must be saved，________the cost!
|
A．however |
B．whichever |
|
C．whatever |
D．wherever |
