Mrs baker chemistry at our since she left universities 1.has taught 2.is teaching 3. taught 4. had been teaching

Mrs Baker ... chemistry at our since she left universities
1.Has taught

Hello, Ann!I am glad to receive a letter from you at last week. How are you? How you spend your holiday?Recently I had visited Arizona. This is spectacular place where I seen a beautiful grand Canyon. The Grand Canyon  is a steep-sided canyon carved by the Colorado River in the state of Arizona in the United States. It is contained within and managed by Grand Canyon National Park. President Theodore Roosevelt was a major proponent of preservation of the Grand Canyon area, and visited it on numerous occasions to hunt and enjoy the scenery. I am really happy that I visited this beautiful place.I hope that you response on my questions. Come to as soon as you can.Best wishes, Aphina.
(120 words)

Apply - application; solve- solution; analyze - analyst; develop - developer -development; compute - computer; cater -catering; maintain - maintenance; manage - management; require - requirement; specialize- specialist; install - installation.

Применить - применение; решить - решение; анализ - аналитик; разрабатывать - разработчик -развитие; вычислить – компьютер/вычислитель; обслуживать –обслуживание питанием; содержать - техническое обслуживание; управлять - управление; требовать- требование; специализироваться - специалист; установить - установка.