In the quiet darkness, I could hear someone _______ the door and go upstairs.
| A．open | B．to open | C．opened | D．to be opening |
These product are very cheap because the industry___the raw materials,the prices of which remain low
| A．takes on |
| B．depends on |
| C．stands on |
| D．keeps on |
—How long are you staying?
—I don’t know.___
| A．That’s OK |
| B．Never mind |
| C．It depends |
| D．It doesn’t matter |
Having been ill in the bed for nearly a month,he had a hard time___the exam
| A．pass |
| B．to pass |
| C．passed |
| D．passing |
The president passed___shortly after his election
| A．off |
| B．over |
| C．on |
| D．away |
In recent years,parents have been___a great deal of importance to the education of their children
| A．attaching |
| B．attracting |
| C．attacking |
| D．assigning |