A．Because he will have someone to talk with during the trip.
B．Because traveling alone is dangerous.
C．Because the expense can be reduced in this way.
D．Because they have many similarities.
A．He slept in a prison in Germany.
B．He was nearly killed in Devon.
C．He was dragged into the center of the Middle East war.
D．He took a train on which he Was threatened by a murderer.
A．working for his friends living in the place he's visiting
B．singing and giving concerts during the trip
C．living cheaply when traveling
D．money from his main work
A．effective
B．in vain
C．violent
D．under control