She always come to our help when we get into trouble ____ she is very busy.
| A．since | B．once |
| C．even if | D．so that |
He sat back on the chair, took a book and began to read, ___.
| A．being looked at ease | B．looked rather at ease | C．to look rather at ease | D．looking rather at ease |
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 |