He didn’t explain _______ why he was late, which made us unhappy.
#26948
A
of us
B
us
C
for us
D
to us
推荐题目
A great welcoming party was held yesterday ________ the visiting president, Mr. Xi Jinping.
#25440
A
in place of
B
in charge of
C
in honour of
D
in memory of
The topics of a travel journal can be different from a diary, often _______ people, things, and events __________ the readers. 
#27189
A
including…less familiar with
B
included…familiar to
C
including…less familiar to
D
including… less familiar than