Since no other way to escape from the flood, ____ only safe thing is to take ____chance.

.The report shows that global climate change__________the drought in Southwest of China but ______ we need to make greater efforts.

----Have you known Professor Jackson in our department for a long time ? ----Yes, since he _____ the our university.

The experiment show that proper amount of exercise, if ________ regularly, can improve our health.

.—I really don’t know whether I can be admitted to dream university in a month.  —________. Everything is possible.