Question

_____ we have enough evidence, we can’t win the case.

A．Once

B．As long as

C．Unless

D．Now that

Answer 1

C

试题分析：考查连词辨析。根据句意：除非我们有充足的证据，否则我们赢不了这场官司。A一旦；B只要；C除非；D既然。所以答案选C。