英语试题帮忙回答，100分奖励，题目不难，快来，急急急

a hi,mark,What are you doing ?
b (Studing for an English test) .
a studing for an English test ? l think English is difficult to learn
b (What's your biggest problem on English)?
a my biggest problem is that l can,t memorize so many new English words (can you give me some advice)?
bYou can memorize words by singsing English songs and slso you can (jion in a English club).in the club ,youcan meet many interesting people you canhave a try.
a thank you .
b (any time).

a hi,mark,What are you doing ?
b --I am studying for an English test.--------------
a studing for an English test ? l think English is difficult to learn
b------Why do you think English is difficult to learn? What is your biggest problem?--------
a my biggest problem is that l can,t memorize so many new English words--------Can you tell me how to memorize English words?
bYoy can memorize words by singsing English songs and slso you can----pra