Problem 1: Hello. This is Mark Kelly. I just had a maintenance service for my car at your repair shop yesterday. And I took it back this morning. But the engine is not working properly again, and so does the brake. I feel really disappointed. What should I do now? Problem 2: Hi. This is Kate Wright. I have an appointment for health check with Dr. Clare at 10 a.m. tomorrow. But something urgent came up and I need to leave for a business trip to Sydney early tomorrow morning. Is it possible to rearrange my appointment? Problem 3: Hi. This is Jacob Duncan. I ordered a photocopier from your company last Sunday. Your staff told me it took four days to deliver. Five days has gone by since the order date, but I have not received it yet. Can you tell me how long I have to wait? Again, this is Jacob and my order number is 217P. Problem 4: Hi, this is White Young. I bought a hair dryer from your shop last Sunday, and I just made use of it this morning. But it made awful noise. Could you let me know what I should do Chọn 1 chủ đề và đưa ra giải pháp. Giúp mình vs ạ

There are ___ pens in that drawer. A.a B.an C.some D.any C đúng k ạ

John doesn't have ___ dictionary. A.a B.an C.some D.any A hay D ạ

He is ___ sociable boy. A.a B.an C.some D.any