—I didn't go to work yesterday afternoon because my car broke down.
—You ___ mine. I wasn't using it.
| A．might borrow | B．could have borrowed |
| C．can have borrowed | D．ought to borrow |
________ mud on his trousers brushes off easily.
| A．Drying | B．Having dried | C．Being dry | D．Dried |
The young lady was careful _________.
| A．not repeating her mistake | B．not repeated her mistake |
| C．to not repeat her mistake | D．never to repeat her mistake |
The bridge is so important to the people here that once ________ it must be carried out without delay.
| A．designs | B．having designed | C．designing | D．designed |
Though they had a meeting yesterday, there is still much that remains______.
| A．to solve | B．to be solved | C．solving | D．solved |
The students expected there ________ more free time before the test.
| A．is | B．have been | C．to be | D．being |