Samuel Clemens , ______ Mark Twain , became a famous writer .
#96872
A
was known as
B
known as
C
was known for
D
known for
推荐题目
 We looked everywhere for the keys, but they are nowhere _______.
#98436
A
to find
B
to have found
C
to be found
D
being found
Without facts,we cannot form a worthwhile opinion,for we need to have factual knowledge ______ our thinking.
#98906
A
upon which to base
B
which to be based on
C
which to base on
D
to which to be based on