listen的现在进行时为：listening...

score的现在进行时为：scoring...

undercut的现在进行时为：undercutting...

trash的现在进行时为：trashing...

quail的现在进行时为：quailing...

laze的现在进行时为：lazing...

front的现在进行时为：fronting...

hopple的现在进行时为：hoppling...

be的现在进行时为：being...

zero的现在进行时为：zeroing...

despise的现在进行时为：despising...

interpose的现在进行时为：interposing...

aggregate的现在进行时为：aggregating...

prime的现在进行时为：priming...

extrude的现在进行时为：extruding...

equal的现在进行时为：equalling...

Rev的现在进行时为：revving...

fledge的现在进行时为：fledging...

prim的现在进行时为：primming...

这部机器是用水蒸气推进的.This machine is driven by steam.航空部对喷气推进的兴趣正在增加。Interest in jet propulsion was now growing at the Air Ministry.德军推进的方向现在已经看得更加清楚了.The direction of the German thrust had now become more obvious....

whale的现在进行时为：whaling...

butter的现在进行时为：buttering...

oil的现在进行时为：oiling...

yeast的现在进行时为：yeasting...

finalize的现在进行时为：finalizing...

clap的现在进行时为：clapping...

ferment的现在进行时为：fermenting...

upstage的现在进行时为：upstaging...

squash的现在进行时为：squashing...

abound的现在进行时为：abounding...