3.        The city of London suffered its worst __31__ attack ever on July 7th, when four __32__bombers set off bombs on the city’s public transport system, killing more than 50 and __33__ hundredsmore.       Police believe the three explosions on the underground and one on a double-decker bus were thework of British-born Muslims.       The parents of one of the bombers, concerned about his safety, had __34__ him missing. Littledid they know that he was a bomber until items __35__ him were found at one of the locations.
【題組】31.
(A)terrify
(B)tour
(C)murder
(D)terrorist
(E)terrorism