问题补充：
.
Along with the increasing number of the Chinese students in Australia, David Irvine , theythe role of a bridge for the link-up and exchange between the two countries.
A. expressed; had played
B. expressing ; have been playing
C. expressed; are playing
D. expressed ; are being played
答案：
A. expressed; had played
B. expressing ; have been playing
(答案→)C. expressed; are playing
D. expressed ; are being played
解析：可联系答.案.网客服索取。
