A break between classes is a good time for students to play sports and talk with their classmates. So it _____ helps with students' health,_____ improves their social skills.
本题考查not only…but also… 的固定搭配。句意：对于学生来说，课间休息是做运动以及和同学聊天的好时机。所以，它不仅对学生的健康有益，还能提高他们的社交技能。not only…but also… 意为“不仅……而且……”，符合本题语境。
—What do you think of English?
—I think English is as _____ as Chinese.
as…as…之间要用形容词或副词的原级，故答案为A。
I got up early this morning _____ my grandma at the airport.
本题考查动词不定式的用法。句意：我今天早上起得很早，为的是去机场接我奶奶。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A。