Having been ill in bed for nearly a month, he had problems __________ the exam.
Sang Lan was so seriously injured that she was ______ to a top hospital in New York.
We were talking and laughing, when our teacher came in and asked us what all the ______ was about.
The elevator _________ and we were trapped inside for half an hour.
--- Jim failed again in the maths examination. --- Don't scold him too much. _____ , he has tried his best.
. The conference has been held to discuss the effects of tourism ______ the wildlife in the area.