I can hardly remember any occasions ____ I get caughtin a traffic jam in our town．

The boy was badly ill．He had to drop out of school because of________．

rry __________ for my illness, I wouldhave come to give you a hand

I’ll never understand _______ it came about that you were late three times a week[ ]

3．Tom went against his promise ______ he would never cheat in exams, ______ made him unpopular with his classmates