2019年mpa考试英语真题——介词和介词短语193

{01}With the guide leading the way we were able to travel ________ the forest not ________ air but ________ foot．
A.through; by; on
B.across; by; on
C.past; on; by
D.into; on; by
解析：本题考查介词的用法，through表示“从……里(中)穿过”；by可表采用某种交通方式，如by land(走陆地)by sea/water(走水路)by train/plane/ship乘火车/飞机/轮船等。但是，表“步行”则说成on foot。
本题选A。
{02}If the boss ________ his mind, our plan can’t be carried out．
A.changes
B.have changed
C.changed
D.is changing
解析：
本题选A。