Completing a sentence with one word or two words sharpens one's language comprehension, cognitive development, attitude formation, vocabulary building and elimination skills.
Introductory and transitional word(s) such as "but", "although", "inspite of", "however", "moreover", "yet" etc. provides clues to choose the word(s) that is/ are logically and grammatically correct.
Elimination process and educated guessing help in finding the right answer. Most of the standardized tests use sentence completion questions to assess one's vocabulary and logic.
1. The ease with which he is able to wield the paint brush is really remarkable.
(a) practice (b) potential (c) ease (d) sweep
2. Everybody should abstain from any action which might create ill-will among people.
(a) absent (b) resist (c) avoid (d) abstain
3. To summarize an article is to separate essential facts from the supporting material that surrounds it.
(a) enhance...digressions (b) essential ... supporting (c) explanatory...characteristic
(d) unaffected ... criticizing
4. The availability of oxygen is an essential condition for animal life while carbon di oxide is equally necessary for plant life.
(a) choice ..optional (b) luxury ... harmful (c) condition ..necessary (d) conversion..selective