Old Richard,        ill so long, is losing his memory and needs to be attended to. 
#88627
A
to be
B
being
C
having been
D
to have been
推荐题目
When I was walking in the street, I heard my name ___.
#97764
A
to call
B
calling
C
call
D
called
_____ his homework, he went out to play.
#98329
A
Having done
B
Done
C
He has done
D
He had done
The weather in Quzhou is rather cold in winter, especially ________ that in my hometown.
#89030
A
having compared to
B
comparing to
C
compare to
D
compared to