I’m fed up with the noise—I _______ in the neighborhood of an airport for a year.
| A．have been working | B．am working |
| C．had worked | D．work |
Now we could not do anything but ______ for him here.
| A．waited | B．waiting | C．to wait | D．wait |
Paul does nothing but _____ all day long.
| A．play | B．to play | C．playing | D．played |
I saw Mary ____ the house.
| A．open the door and go into | B．to open the door and to go into |
| C．open the door and to go into | D．open the door and went into |
Mr. White was seen ______ the Palace Museum.
| A．enter | B．to enter | C．entered | D．to entering |
I was surprised______.
| A．watching him to eat so quickly | B．watch him eat so quickly |
| C．watching him eat so quickly | D．to watch him eat so quickly |