Because of the Russian gas limit to Europe, attempts _______ to use botanical fuel as a source of power.
.What surprised me most was not what she said but ______she said it.
Many students signed up for the _______ race in the sports meeting.
._______ we couldn’t understand was _______ more and more students went abroad after graduation.
In face of ______failure, it is the most important to keep up ______ a good state of mind.A a; - B.the; - C.-; a D.-; the
.I didn’t know how to _______ the problems I faced, so I asked my parents for help.