26. It is usually not quite cold in this area in March, but sometimes the temperature ______be very low.
| A．can | B．should | C．must | D．shall |
You might as well expect a river to flow backward ____ us carrying out the plan.
| A．than stop | B．as to stop | C．as stop | D．so as to stop |
________had the worker who was badly injured in that accident stopped breathing and died________ doctors arrived.
| A．Almost; when | B．Hardly; when | C．Not; until | D．Hardly; before |
So fast _____it is difficult for us to imagine its speed.
| A．does light travel that | B．light travels that |
| C．as light travels that | D．with light travels |
You should know _______to spend all your money on those impractical fancy goods.
| A．other than | B．rather than | C．more than | D．better than |
— I don’t think he is studying English in his room now.
— Oh! ________?
| A．Does he | B．Doesn’t he | C．Is he | D．Isn’t he |