[-B3] -Haven't you seen the sign, ________"NO PHOTOS"? -I'm really sorry I didn't.

Translation: --Didn't you see the sign that said "No Photography"? --I'm really sorry, I didn't (see).

Explanation:

1. This question tests the grammar of using non-predicate verbs as postpositional attributives.

___ "No Photos" is a post-positioned attributive, modifying the sign of the sentence.

2. There is a lexical rule at this time: if you say "TV/radio/newspaper/magazine/ When notices/marks/books, etc. are written with...", the verb is always say/read, and other verbs such as write cannot be used; and there is an active relationship between these carriers and the verb say/read.

3. Based on the active relationship between the sign and read, the answer to this question must use the present participle reading to guide the post-positioned attributive, so the correct answer is D.

A is the predicate form of read. When used as a predicate in a sentence, it cannot be used as a post-positioned attributive and other non-predicate components;

C is the prototype of read, and it cannot be used as a post-positioned attributive;

B is an infinitive structure. When used as a postpositional attributive, it generally expresses actions that often occur or have not yet occurred, which does not conform to the meaning of this sentence.