Theybuiltahighway_______themountains.
D
leading into 的逻辑主语是 highway ,它们之间是主动的关系,所以用动名词形式。句意:他们修建了一条通往山里的公路
Peopleappreciate_______withhimbecauseheisknowledgeableandhumorous.
To a worker, ________ from the point of view of society is necessary labor is from his own point of view voluntary play.
Thechallengeisnotoneofexpansion._______,therapidgrowthinenrollmentoverthelast40yearshascometoanend.