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
 After the flood, there were hundreds of homeless people that needed _____.
#97110
A
rescued
B
being rescued
C
to rescue
D
to be rescued
Everyone is looking forward to seeing the plan ________ in the near future. 
#89705
A
carrying out
B
carry out
C
carried out
D
having carried out