Question

______ it ______ for your help, I couldn’t have made any progress. A．Had; not been B．Should

Answer 1

A
考查虚拟语气。根据语境可知考查与过去事实相反的虚拟语气，故从句用had
+
v-ed，had
it
not
been
="
if"
it
had
not
been，故选A。