18. Which of the following is the accurate practice for bilingual instruction? (A) Use English first and translate into the learner’s first language (i.e. Chinese). (B) Use one language in some classes and the other language in other classes. (C) Use sentences in L1 (Chinese) inserting target words in the target language (English). (D) Use sentences in L2 (English) inserting L1 gloss (Chinese) in target words.