He‘sworkinghard_____.
A、forfearthathewillfailB
for fear (that)“惟恐，以免 ”，引导的从句用虚拟语气 should+动词原形， should 可省略。 lest 意思及用法类似。
Copernicusmaintainedthattheearth_____roundthesun.
Hisarticleisbetterthan_____intheclass.
_____youunderstandthisrule，you‘llhavenodifficultyindealingwithsuchproblems.
Thosepeople_____ageneralunderstandingofthepresentsituation.
Hedrovefastandarrivedanhour_____ofschedule.
