Identify the sentence type of the following sentence.
An increasing proportion of people in modern society know how to speak English.
A、simple sentence
B、compound-complex sentence
C、compound sentence 
D、complex sentence
Identify the sentence type of the following sentence. An inc - 02 Sentence Writing Skills (Grammatical Range and Accuracy) - 雅思写作 - 爱课程(中国大学MOOC) | 大学网课搜题引擎