问题
选择题
It does not matter that you are a slow walker _____ you never walk backwards.
A．as long as
B．as soon as
C．unless
D．until
答案
答案：A
题目分析：句意：你走的慢没有关系，只要你不往回走。As long as :只要 as soon as :一...就...；尽快unless:除非until：直到。根据句意选A。