根据对话内容和所给的首字母，写出对话中所缺的单词，使对话完整，合乎情景。

M：Dr Wilson, can I talk to you for a minute?

W：Sure, Fred, what is it?

M：I'm w 　　1　　 about my grade in your English class．I really want an“A”, but…

W：I see．Well, it might be h 　　2　　 for you to get an“A”．So far you have a“B”average．You would need a 97 or 98 on your final exam to get an“A”．Do you think you can get that h 　　3　　 a score?

M：Probably not．The problem is that I have to have a“B”average in all the s 　　4　　 to get the prize from our government, or I'll have to find a part-time job．I'm a 　　5　　 it is difficult for me to put all my h 　　6　　 in my study if I have to work in my spare time．I'll p 　　7　　 get an“A”in history and a“B”in Maths, but I'll get a“C”in chemistry．

W：That's a problem, isn't it?You'll have to have an“A”in English to get a“B”average．

M：Yes, but it doesn't look very good for me right now．

W：I gave two l 　　8　　 tests this term than I usually do．That might have c 　　9　　 your grade a little．Maybe I'll give everybody a chance to write a c 　　10　　 in English．Then you'll have a good chance to get an“A”．

M：That would be great．I'll try my best．Thank you very much．