Having been ill in bed for nearly a month, he had problems __________ the exam.
-----What happened here yesterday? -----An adventurer was walking at the foot of the mountain ______ suddenly a stone fell and hit him on the head.
The teacher refused to have his daughter study in his class, ______ showing favour to her.
—I’ve heard they went skiing in the mountains last winter. —It ______ true because there was so little snow there then.
. ______ by the earthquake, the city of Port-au-Prince(太子巷) had to be rebuilt.
. —Alice promised to come around to ______ you company today. —But she hasn’t. I’ve been alone all day.