Question

—______ there is no water left on the earth? —I really don’t know.

A．So far

B．Even though

C．What if

D．Ever since

Answer 1

C

试题分析：So far到目前为止；Even though 虽然，即使；What if假使……将会怎么样；Ever since从那时到现在。句意：假使地球上没有了水，会怎么样？——我真的不知道。结合语境可知选C。