Question

28. The last exhibition I went to was A) as B) more C) so D) too crowded that I could hardly see anything​

Answer 1

The correct answer is C) so.

The sentence should read: "The last exhibition I went to was so crowded that I could hardly see anything."

Answer 2

Оптимальный ответ на ваш вопрос будет следующим:

The last exhibition I went to was so crowded that I could hardly see anything.

Этот вариант подходит, потому что слово "so" используется для выражения степени, в данном случае, степени переполнения на выставке.