— Will you come and play football with us?
— ____________. I have a lot of homework to do now.
A:I am afraid not
B:I don't
C:I mustn't
D:I am not
I have no difficulty __________ writing, but I have some difficulty __________ pronunciation.
珠江三角洲发展工业的独特优势是( )
于龙同学的听课笔记中记载了以下信息:“100周年、双方伤亡七十万人、有‘绞肉机’之称。”据此我们可以判断,该同学学习的内容是( )