(Worse) It is important to develop a more effective approach to solve the complicated problem.

(Better) A more effective approach must be developed to solve the complicated problem.

(Worse) There were nine observations taken for each trial run.

(Better) Each trial run included nine observations.

(Worse) There is a chance that multifunction printers include many additional utilities.

(Better) Multifunction printers may include many additional utilities.

(Worse) It is crucial that an ink jet printer is more versatile than a laser printer.

(Better) An ink jet printer must be more versatile than a laser one.

(Worse) There can be little doubt that ink jet printers have a higher per-page cost than laser printers.

(Better) Ink jet printers undoubtedly cost more per page than laser ones.

(Worse) It is quite probable that an ink jet printer is a better choice than a laser printer if initial cost is the primary consideration.

(Better) An ink jet printer is probably a better choice than a laser one if initial cost is the primary consideration.

(Worse) There is a comparison made in this article of the major differences between commercially successful keyboards.

(Better) This article compares the major differences between commercially successful keyboards.

(Worse) It is unlikely that ink jet printers will become obsolete owing to their relatively low cost.

(Better) Ink jet printers will unlikely become obsolete owing to their relatively low cost.

(Worse) It is not necessary to train the network in all instances.

(Better) The network does not need to be trained in all instances.

(Worse) It is possible to configure Windows NT so that a password is required at the workstation.

(Better) Windows NT can be configured to require a password at the workstation.

(Worse) There is an opportunity for an error to happen within the application.

(Better) An error might happen within the application.

(Worse) There is a necessity for the program to be implemented by a knowledgeable systems manager.

(Better) A knowledgeable systems manager must implement the program.