The foreigners had just left the museum______they heard a bomb explode at the exit.
A、
before
B、
since
C、
as soon as
D、
when
【正确答案】
D
【答案解析】
解析：考查固定句型。had(just／hardly／scarcely)done sth．when…意为“刚做完某事，这时……”。
提交答案
关闭