Question

We never know we will succeed ________ we actually tr

We never know we will succeed ________ we actually try. A．until B．when C．unless D．though

Answer 1

A

试题分析：句意：直到我们真正的尝试才知道是否会成功。never…until“知道……时候才”。 B. when“当……时候”；C. unless“除非”；D. though“尽管”，故选A。