It makes no difference __________

The touch they had both kept in ________many years broke.

Scientists say that banana trees may disappear(消失) from the world banana cancer.

The boy was too young to write, but he sent his father a letter and told him what had happened _______ drawing pictures.AwithBinCtoDby[ ]

Do you think we should accept that offer? —Yes，we should，for we______ such bad luck up till now，and time______ out