—Do you think we can get there on time?
—Yes,_________ the bus does not break down.
| A．even if | B．unless |
| C．until | D．so long as |
. Do you know the girl _____ just now?
| A．to who I nodded | B．I nodded to |
| C．I nodded to her | D．that has been seen |
Now, children, it’s time you _______.
| A．washed and dressed | B．are washed and dressed |
| C．will wash and dress | D．were washed and dressed |
In order to prevent the fire spreading, some of the houses nearby
_____before the firemen arrived.
| A．have been pulled down | B．have pulled down |
| C．had been pulled down | D．had pulled down |
. He shut the window with such force ________ the glass broke.
| A．which | B．that | C．as | D．when |
Some of the exercises appear to be____ ones that you have done, but after taking _____ second look, you will find that they are different.
| A．不填; the | B．the; the | C．the; a | D．the; 不填 |