The lady was so absorbed in her job that she didn't hear a customer ________ at the door.
| A．to knock | B．knocking |
| C．be knocked | D．knocked |
The managing director promised that he would _____ me as soon as he had any further information.
| A．communicate | B．notice | C．notify | D．note |
These plastic flowers look so _____ that many people think they are real.
| A．beautiful | B．natural | C．artificial | D．similar |
When the big bills for mother's hospital care came, father was glad he had money in the bank to _____.
| A．fall short of | B．fall through |
| C．fall back on | D．fall in with |
The farmers were more anxious for rain than the people in the city because they had more _____.
| A．at length | B．at last | C．at stake | D．at ease |
The Prime Minister refused to comment on the rumor that he had planned to _____.
| A．discharge | B．dismiss | C．resign | D．resume |