2019年mpacc考试英语真题——介词和介词短语1503

{01}—You"d better leave the key at home __________ one of us should think of coming back.
— Why? Is your key lost?
A.in that case
B.in case of
C.in no case
D.in case
解析：
本题选D。

{02}________ the explanation of the book, we finally understood the meaning of the passage.
A.With the help of 
B.Under the help of
C.After the help of  
D.By the help of
解析：
本题选A。