Robert is said _______ abroad, but I don’t know what country he studied in.
| A．to have studied | B．to study | C．to be studying | D．to have been studying |
I couldn't help _____ when I heard the joke.
| A．being laughed | B．laughing | C．to be laughing | D．to laugh |
She was noticed ______ the shop.
| A．to enter | B．enter | C．having entered | D．entered |
I remember _____ someone ____ the umbrella away.
| A．to see, take | B．having seen, to take |
| C．to see, to take | D．having seen, take |
The noise of the desks _____ could be heard in the next classroom.
| A．being opened and closed | B．opened and closed |
| C．having been opened and closed | D．to be opened and closed |
The old man didn’t know whether to sell the car or____ .
| A．being kept for later use | B．kept for later use |
| C．to keep it for later use | D．to be kept it for later use |