用正确的连接词填空,注意首字母大写. 状语从句引导词 before, after, when , though , if , because, so that. __________ you pay for the goods, you'd better check it carefully. You need to look at the price carefully_________ you are shopping. __________ I walked for a whole day, I was really tired. _________ he answered my question, I was still confused. _________ you pay with the credit card, you can get a 5 % discount. He leaves the dorr open___ ____ his dog can enter by herself. I couldn't feel anger against him_______ I liked him so much.