помогите сделать тест по английскому! 3 предложения!

  1.If you don’t know the reader’s name, as a closing ….. of your letter you will use “Yours faithfully.”   1.ending 2.salutation 3.signature 4.clause   2.This job requires a good … for figures. Выберите один ответ.   brain   head   faculty   understanding 3.  A good manager should use the resources of the company ….. Выберите один ответ. effectively   successfully   physically   essentially