The recent earthquakes have caused conce
题型:选择题
问题:
The recent earthquakes have caused concern because they happen _____ population centers and have caused huge damage.
A.to be hit
B.hitting
C.having hit
D.to have hit
The recent earthquakes have caused concern because they happen _____ population centers and have caused huge damage.
A.to be hit
B.hitting
C.having hit
D.to have hit