I ________ use a clock to wake me up because at six o'clock each morning the train comes by my house.(2012·新课标全国)
| A．couldn't | B．mustn't | C．shouldn't | D．needn't |
.With the money _______ , he couldn’t buy any ticket.
| A．to lose | B．losing | C．lost | D．has lost |
The teacher came into the classroom _______ by his students.
| A．following | B．to be following | C．followed | D．having followed. |
_______ a little money, Jimmy was able to buy his mother a lovely new lamp.
| A．To save | B．Saving | C．Saved | D．Having saved |
Here are some new computer programs _______ for home buildings.
| A．designing | B．design | C．designed | D．to design |
_______ with the size of the whole earth, the highest mountain does not seem high at all.
| A．Comparing | B．To compare | C．Compared | D．Having compared |