He is said ______ several books since 1996.
| A．that he's written | B．to have written | C．to be writing | D．to write |
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 |
_______ a post office, I stopped _______ some stamps.
| A．Passed, buying | B．Passing, to buy | C．Having passed, buy | D．Pass, to buy |