Does your school hold the raising of the national flag every Monday morning? 此题出自2015年江苏镇江市中考英语真题及答案,江苏镇江市2015年初中毕业升学考试英语试卷 --Does your school hold the raising of the national flag every Monday morning? ---Yes,____it rains heavily. A, if B. since C. because D. unless