—I’m terribly sorry to have put you to so much trouble . — . You didn’t mean to , did you ?
29.An example of them is fraud, a crime _______ money is stolen by cheating others.
28. Dr. Frank failed many times but he finally _____ to find a successful way to solve the problem.
27.---Where have you been? ---I got caught in traffic, otherwise I _______ here earlier.
26.—May I ask a question after class,sir? —____,but not during my lunch break.
25.The fire spread fast.Luckily the local government had brought it under control___the situation got worse.