According to the news, which of the following country could be affected by the toxic mud
U.N. Secretary—General Ban Ki-moon is expected to arrive ______ in Chile.

A．Croatia.
B．Ukraine.
C．Bulgaria.
D．All of the above.

A．Nearly two thousand nurses left the Caribbean between two thousand two and two thousand six.
B．Caribbean nations currently have about one nurse for every one thousand people.
C．Currently, more than twenty-one thousand nurses who trained in the Caribbean are working in the United States, Canada and Britain.
D．All of the above are right.