Receiving some of my tests

Today, i got back my tests paper. I got back my maths, chinese, english and history papers. Well, i am quite happy to see my chinese since i hit my target which A2!!! WOOT!!!!!!!!!!!!!!!!!! Well, what disappoint me is actually my maths and history. Though i hit my targeted score of B3. My maths i got only 15 out of 20 because of the bonus question. Without the bonus question, i guess i would have fainted. For history, i only got B3!!!! This is so damn low man!!!! I thought i would at least get an A2. If i just got one more mark, i would get an A2. Lucky old me, i got an A2 for my english. Just an A2. How low huh?!?!? But what can i do??? I just hope that the rest of the papers that i haven't receive would hit my target score or even better.