How dirty the windows are! They really require _______.
| A．to clean | B．being cleaned | C．to have cleaned | D．cleaning |
. “Mary looks hot and dry” “So _____ you if you had so high a fever.”
| A．do | B．are |
| C．will | D．would |
What the boy enjoys _____ to have a room of his own.
| A．being | B．to be |
| C．is | D．are |
The president _____ a cool reception when he visited London.
| A．gave | B．was given |
| C．had given | D．had been given |
The theory he sticks to ______ to be of no use in our studies.
| A．proves | B．prove |
| C．proving | D．be proved |
I think this is the very work that we must finish ____ her.
| A．to help | B．help |
| C．helping | D．helped |