The new technology, if to rice growing, will help increase the grain output．
| A．applying | B．applied | C．to apply | D．having applied |
The map is one of the best tools a man has _ _ he goes to a new place.
| A．whenever | B．whatever | C．wherever | D．however |
"Genius" is a complicated concept, _ _ many different factors.
| A．involved | B．involving | C．to involve | D．being involved |
- We've only got this small bookcase. Will that do?
- No, _ _ I am looking for is something much bigger and stronger.
| A．who | B．that | C．what | D．which |
--- Was it by cutting down staff _ _she saved the firm?
----- No, it was by improving work efficiency.
| A．when | B．what | C．how | D．that |
The club, _ _ 25 years ago, is holding a party for past and present members.
| A．founded | B．founding | C．being founded | D．to be founded |