单项选择题

Dr. Smith failed many times but he finally ______ to find a successful way to solve the problem.

A．broke off
B．broke down
C．broke out
D．broke through
<上一题 目录 下一题>
热门 试题

单项选择题
When I go out in the evening I use the bike ______ the car if I can.
A．rather than
B．regardless of
C．in spite of
D．other than
单项选择题
61（）

A．products
B．programs
C．produce
D．governments
相关试题