2019年mpacc考试英语真题——名词943

{01}There are certain ________ when you must interrupt people who are in the middle of doing something.
A.conditions  
B.situations
C.occasions  
D.environment
解析：
本题选C。

{02I wrote him a letter to show my_________of his thoughtfulness.  
[    ]
A.achievement                  
B.agreement  
C.attention                      
D.appreciation
解析：
本题选D。