1) Faraday made many ________ in the field of physics and chemistry.  a) A. discover  b) B. discoveries c) C. discovered d) D. discovering 2) Faraday was an ________ in Davy's laboratory. a) A. assistance  b) B. assist c) C. assistant d) D. assisted 3) The generator is one of Faraday's most important ________. a) A. achievements  b) B. achievement c) C. achieve d) D. achieving 4) His ________ of the generator is very famous. a) A. invent  b) B. inventive c) C. invention d) D. inventor 5) We will ________ our English vocabulary if we read English books every day. a) A. rich  b) B. richness c) C. enrich d) D. richly 6) You study very well. It's ________ that you will fail the exam. a) A. possible  b) B. impossible c) C. possibility d) D. impossibility 7) Lan always shares her ________ with me. a) A. sadness  b) B. sad c) C. sadly d) D. unsad 8) These children have the ________ to imitate animals' voice. a) A. able  b) B. ability c) C. disable d) D. disability 9) Money doesn't bring ________ to man. a) A. happy  b) B. happiness c) C. happily d) D. unhappy 10) Good students aren't ________ intelligent students. a) A. necessary  b) B. necessity c) C. necessarily d) D. unnecessary

Exercise 1 - Word forms

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