.—How do you like the address Hu Jintao delivered at the Asian APEC in 2009? —Great. I take that he spoke of the physical security measures.
30.It was_________ back home after the experiment.
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.