4. Try to give: a) synonyms to the following words: to produce, to determine,
to consider, to gather, to perform, to identify, to continue, to
develop, to prepare, to consult, to present, to assist, to review,
to supervise, to complete, to devote;
b) antonyms to the following words: effective, increasing, new,
relevant, important, different, completed, considerable.

Synonyms:

1. To Produce: To create, to manufacture, to generate, to fabricate, to construct.
2. To Determine: To ascertain, to decide, to conclude, to establish, to resolve.
3. To Consider: To contemplate, to ponder, to deliberate, to reflect on, to mull over.
4. To Gather: To collect, to assemble, to accumulate, to amass, to congregate.
5. To Perform: To execute, to carry out, to accomplish, to conduct, to implement.
6. To Identify: To recognize, to discern, to pinpoint, to detect, to diagnose.
7. To Continue: To persist, to maintain, to carry on, to proceed, to keep going.
8. To Develop: To evolve, to expand, to grow, to progress, to advance.
9. To Prepare: To ready, to set up, to arrange, to equip, to organize.
10. To Consult: To seek advice, to confer, to deliberate, to inquire, to discuss.
11. To Present: To show, to display, to exhibit, to introduce, to reveal.
12. To Assist: To help, to aid, to support, to facilitate, to contribute.
13. To Review: To examine, to assess, to evaluate, to scrutinize, to analyze.
14. To Supervise: To oversee, to manage, to administer, to direct, to control.
15. To Complete: To finish, to conclude, to finalize, to accomplish, to fulfill.
16. To Devote: To dedicate, to commit, to allocate, to assign, to apply.

Antonyms:

1. Effective: Ineffective, futile, unproductive, useless, inefficient.
2. Increasing: Decreasing, diminishing, reducing, declining, lessening.
3. New: Old, ancient, outdated, obsolete, antiquated.
4. Relevant: Irrelevant, unrelated, immaterial, inapplicable, extraneous.
5. Important: Trivial, insignificant, minor, negligible, unimportant.
6. Different: Similar, alike, identical, the same, indistinguishable.
7. Completed: Incomplete, unfinished, ongoing, partial, unaccomplished.
8. Considerable: Insignificant, minor, negligible, small, trivial.