单项选择题 She said that she wouldn't mind（）the typing work for you.

单项选择题 In those early days, the boy company's（）business was model railways and cars.

单项选择题 She（）mail the package before the post office closes.

单项选择题 The seller was trying to sign a substantial order（）

单项选择题 They look forward to（）the new products soon.