The public transport system in Beijing is very good now, so there _____be any difficulty in traveling around the city.
33.Both of the two boys are enjoying their lives ______ the fact that they have very little time to do other things.
32.My parents send me to a school _____ rules are just as important a part of education as the academic subjects.
31.—Can you tell me what time the flight to Detroit leaves? —I'm sorry, but it ______.
30.Napoleon would have taken over the world if he ______ the Battle of Waterloo.
29.—How did he break his head while swimming? —______ my warnings, he dived straight into the shallow water.