________ in 1636, Harvard is one of the top universities in the United States.
| A．Being founded | B．It was founded | C．Founded | D．Founding |
At the computer operation test, one is supposed to stay at his own machine, keep his eyes on his screen, ______ to anyone.
| A．and not to speak | B．but could not speak |
| C．instead of speaking | D．or rather speak |
______ as the “First Lady of Speech”, Dr Lillian Glass is recognized as one of the world’s leading experts on communication skills.
| A．Knowing | B．Having known | C．Known | D．To be known |
It rained nonstop for ten days , completely our holiday.
| A．to ruin | B．ruined | C．having ruined | D．ruining |
—What happened to you on your way back to the hotel last night ?
—I lost my way in complete darkness and , things worse , it began to pour .
| A．making | B．to make | C．having made | D．made |
Creating better health care, education and housing for everyone is a simple idea, but ____ which is hard to put into practice．
| A．one | B．that | C．the one | D．the other |