--The window is dirty.
----I know. It ______ for weeks.
| A．hasn’t cleaned | B．didn’t clean |
| C．wasn’t cleaned | D．hasn’t been cleaned |
A quarrel _________, which made him ______ his family.
| A．was broken out; break away |
| B．broke out; break away from |
| C．was broken away; break down |
| D．broke down; break out |
1 Having never met with such a _____ problem, he felt _____ and didn’t know how to solve it.
| A．puzzling; puzzled | B．puzzled; puzzling |
| C．puzzling; puzzling | D．puzzled; puzzled |
Our class _______ 55 students at that time.
| A． consisted of | B． consists of |
| C． made up of | D． was consisting of |
She felt herself _______ by her friends.
| A．understand | B．understanding |
| C．understood | D．to understand |
As a teacher, he is not only strict _____ his students but also strict _____ his work.
| A．with; with | B．in; about |
| C．in; with | D．with; about |