The two girls are so alike that strangers find __________ difficult to tell one from the other.
| A．it |
| B．them |
| C．her |
| D．that |
—How did you manage to get such a nice old painting?
—Quite _______.
| A．by accidents | B．by a chance | C．by accident | D．by incident |
―It takes _________ patience and skill to be a teacher.
―Well, at least I’m not impatient man.
| A．the; a | B．the; a | C．不填; a | D．不填; an |
The corridors（走廊）was so narrow that I had to myself against the wall to let them pass.
| A．pull | B．press | C．defend | D．prevent |
So far, several cases of a disease, as bird flu, are reported to have been found in the country.
| A．knowing | B．to be known | C．having known | D．known |
There were no women in the committee 1976, but now women are in a majority.
| A．before to | B．previous to | C．ago | D．earlier |