—How much did the guy ______ you to fix your bicycle?

--- I don’t remember,but it was quite a lot.

A．cost

B．spend

C．charge

D．take

Which of the following statements regarding low expansion foam and its application is INCORRECT?（）.

A.Foam should not be used on electrical fires

B.One kilo of low expansion foam solution produces much more foam

C.Foam is only efficient when it covers the top of burning combustibles

D.A stream of foam should be deflected off the deck in order to best agitate the fire