Not all the patents________ have been recognized.
| A．to be examined | B．being examined |
| C．examined | D．having been examined |
—I am sure Mary will win the first prize in the final.
—I think so. She______ for it for months.
| A．is preparing | B．was preparing | C．had been preparing | D．has been preparing |
—Thank you for your wonderful meal.
—______.
| A．No, it was just so-so | B．The same to you |
| C．No, that’s all right | D．It’s my pleasure |
. He was late for the meeting because the bus he took ______ halfway.
| A．broke in | B．broke down | C．broke out | D．broke up |
Most of the big hotels in Shanghai were full last week, But finally we ______find a room in a small one.
| A．ought to | B．could | C．were able to | D．might |
Tom has been out of work for two years, so he has difficulty______.
| A．earning living | B．earning his living | C．to earn livings | D．to earn his living |