Possible Duplicate:
When should a verb be followed by a gerund instead of an infinitive?
What's the difference between the two:
- What materials do they prefer working with?
- What materials do they prefer to work with?
Possible Duplicate:
When should a verb be followed by a gerund instead of an infinitive?
What's the difference between the two:
- What materials do they prefer working with?
- What materials do they prefer to work with?