VII. Изберите верный вариант. 1. a) They reached to the lake

1. a) They reached to the lake at night. - неверно, глагол reach итак указывает на направление движения, потому предлог to не нужен.

b) They reached the lake at night. - верно.

c) They reached at the lake at night. - ошибочно, глагол reach итак указывает на направление движения, поэтому предлог at не нужен.

2. a) Dick worked hard last term and was a success. - ошибочно, человек может быть успешным (successful).

b) Dick worked hard last term, and had a success. - правильно

c) Dick has worked hard last term and was a success. - ошибочно, last term указывает на Past Simple, а тут Pesent Perfect.