I. Causes of Breakdowns in (1) (1) ______ 1. On students’ part — insufficient command over the (2) of English (2) ______ — poor pronunciation 2. On teachers’ part — uncertainty of whether his student has asked a question — the students (3) to employ the correct question form (3)______ — the teacher interprets the question as a comment — difficulties arising even when the student employs an/a (4) (4)______ question form — the teacher may not know about the (5) of the student’ (5)______ difficulty Ⅱ. Specific Questions 1. Begin questions with an/a (6) . (6) ______ 2. Be careful to (7) the exact point. (7) ______ III. Another Reason for the Correct Use of (8) —Politeness (8) ______ 1. The students uses the imperative (9) the question form (9) ______ when he is nervous or struggling with new subject matter. 2. The teacher may interpret it as (10) and feel angry. (10) ______