The old man sitting under the tree smiled dreamily, as if _____something pleasant in the past.
#81735
A
to remember
B
remember
C
remembering
D
remembered
推荐题目
Form then on we never saw her again, nor ________ from her.
#566
A
heard we
B
had we heard
C
we have heard
D
did we hear
Only then ________how much damage had been caused. 
#80972
A
she realized
B
she had realized
C
had she realized
D
did she realize
— Is your mother still a teacher?— ______.
#84646
A
Yes, she was
B
She didn’t use to
C
No, but she used to
D
No, but she used to be
Not until he went abroad to further his study_______ the importance of English.
#82848
A
has he found
B
he has found
C
did he find
D
he had found