My pictures are better than this.（改为同义句）
His pictures are _______ than ________.
Beijing is bigger than Hong Kong.（改为否定句）
Beijing ______ ______ than Hong Kong.
There's no need to worry about your father. （改为同义句）
You _____ _______ to worry about.
They like football because it's popular .（就划线部分提问）
_______ ________ they like football?
Flying won't be cheap. Fuel will be expensive.（合并为一句）
Flying will be _______,________ fuel will be expensive.
