A.it’s
B.its
C.his
D.this

A．met Emma at a concert
B．invited Emma to a concert
C．introduced Emma to his friend
D．left Emma his backpack

A. when did you get back
B. What a surprise I got
C. How I admire you
D. I am Tom
E. got hold of
F. got through
G. this is Tom
H. tried to contact you