He‘s working hard_____.
B
forfear(that)“惟恐，以免”，引導的從句用虛擬語氣should+動詞原形，should可省略。lest意思及用法類似。
Theteachergave_____theexaminationpaper.
Thedriverpulled_____atthetrafficlights.
Hisarticleisbetterthan_____intheclass.
He drove fast and arrived an hour_____of schedule.
He‘sworkinghard_____.
