Reading to practise English is the way most foreign students read English. In school you do not read English to learn about a particular subject; for example, you do not read English to learn history. You read English to learn how a sentence is put together, how the verbs agree with the subjects, what the clause is, etc. Qestion: According to the paragraph, when you read to practise English, you have to _____.
选项：

A:learn what the clause is
B:learn how the verbs agree with the subject
C:learn how a sentence is put together
D:learn the vocabulary