11 Complete with: so, such or such a/an.
1 This is
big book that it'll take
me at least a month to read it.
2 high was the standard of the
performance that I was left speechless.
3 We had fun in the arts competition
that we went back again the next year.
4 They had terrible weather during
their trip that they didn't enjoy it at all.
a lot of people attended the
gallery opening that there was hardly any
5
7 She writes in
room to move around.
6 It is
successful a play that it's
been running for three years.
interesting way
that she should have her work published
few critics liked the film that
it stopped screening after a week.
8
12 Us​

1) This is such a big book that it'll take me at least a month to read it.

Explanation: We use "such" before an adjective followed by a noun to emphasize the degree or extent of the adjective. In this case, "such" emphasizes the size of the book.

2) The performance was so high that I was left speechless.

Explanation: We use "so" before an adjective or adverb to express a high degree or extent of something. In this case, "so" emphasizes the high standard of the performance.

3) We had so much fun in the arts competition that we went back again the next year.

Explanation: "So" is used here to express a high degree or extent of fun. It emphasizes the enjoyable experience they had in the arts competition.

4) They had such terrible weather during their trip that they didn't enjoy it at all.

Explanation: "Such" is used to emphasize the degree of terribleness of the weather they experienced during their trip. It shows that the weather was extremely bad.

5) There were so many people attending the gallery opening that there was hardly any room to move around.

Explanation: "So" is used here to express a high number or quantity of people attending the gallery opening. The number of people was significant enough to make it difficult to move around.

6) It is such a successful play that it's been running for three years.

Explanation: "Such" is used to emphasize the success of the play. It highlights the fact that the play has been running for a long time due to its success.

7) She writes in such an interesting way that she should have her work published.

Explanation: "Such" is used to emphasize the interestingness of the way she writes. It suggests that her writing style is highly captivating and deserves to be published.

8) Only a few critics liked the film that it stopped screening after a week.

Explanation: "Only a few" is used to show a small number of critics who liked the film. It highlights the fact that the film was not well-received by the majority of critics.

12) Us

This seems to be a mistake or incomplete question as it does not make sense in the given context.