Pandas are in danger and the _____ is getting very difficult.
四个选项的含义分别是:conversation 谈话;situation 情况;tradition 传统;pollution 污染。句意:大熊猫正处于危险中,并且情况正变得很糟糕。根据本题句意可知选选项B。
I got up early this morning _____ my grandma at the airport.
本题考査动词不定式的用法。
句意:今天早晨,我早起去机场接我奶奶。本题要用动词不定式 to pick up,该句中 to pick up my grandma at the airport 作目的状语,故答案为选项A。