a) Customers receiving good service will help to promote new business by {select: +telling; to tell} up to 12 other people.
b) We'd risk {select: +losing; to lose} a lot of money in legal fees.
c) The new customer care policy means {select: +putting; to put} more time and effort into the Service Department.
d) He is determined {select: leaving; +to leave} the company.
e) We are committed to {select: +giving; to give} the highest quality.
f) We've tried hard {select: having; +to have} this agreement signed.
g) We depend on {select: +having; to have} fast communications.
h) They promised {select: doubling; +to double} our bonuses.