你可能感兴趣的试题
a species'' for surviving are to succeeding
if not managed carefully if are not managed carefully unless not managed carefully unless are not managed carefully
people in the 19th century were eager to eat sugar. if those shipwrecked sailors had drunk fresh water, things would have been even worse. one or more scientists have been hired to cheat in the experiments of sugar. scientists can do nothing without the money subsidized secretly.
that; to survive whether; surviving that; surviving what; survived
had managed would managed have managed managed
rotation switch management transmission
had managed would managed have managed managed
tried; managed managed; tried tried; tried managed; managed
Staying Living Sleeping Surviving
the sailors have lost the sailors lost had the sailors lost did the sailors lose
the sailor must complete some tasks with minimal resources something goes wrong with the sailors life at stake something happens beyond the sailors control the sailor learns the help is reaching him