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
A．achieve expected results
B．last another 3 years
C．resume in December
D．come to an end next year
A．Helping war veterans suffering from PTSD
B．Many war veterans are in disorder
C．A new policy of US Government
D．Benefits of war veterans