When a fire ____ at the National Exhibition in Lon

A.when

B.that

C.which

D.in which

发生火情时，客人们能用电梯吗？

A.Can guests use the stairs when a fire appears？

B.Can guests use the elevators when a fire presents？

C.Can guests use the lifts when a fire occurs？

D.Can guests use the ladders when a fire breaks up？

Each man and each woman ______ asked to help when the fire broke out.

A) is B) was C) are D) were

A.while

B.till

C.when

D.as

They had only _________ in that house for three weeks when fire destroyed it.

A、been lived

B、lived

C、living

D、to live

A.monsters

B.immortals

C.spirits

D.dragons

When a fire()at the National Exhibition, at least ten priceless paintings were completely destroyed.

A. broke off

B. broke out

C. broke down

D. broke up

A portable dry chemical fire extinguisher discharges by ______.

A.gravity when the extinguisher is turned upside down

B.pressure from a small CO2 cartridge on the extinguisher

C.air pressure from the hand pump attached to the extinguisher

D.pressure from the reaction when water is mixed with the chemical

A. on

B. for

C. to

D. at

A.was going

B.goes

C.has gone

A.all hands are at their fire stations

B.all fire-fighting equipment is at the scene

C.the fixed systems are activated

D.the fire is contained and no longer spreading