1. His parents have never enjoyed travelling by sea. - Present Perfect
By that time his parents had already enjoyed travelling by sea. Past Perfect
By Christmas his parents will have enjoyed travelling by sea. - Future Perfect
2. Susan has never travelled by train. - Present Perfect
Susan had travelled by bus. - Past P. (=Perfect)
By the end of the month Susan will have travelled by train. - Future P
3. Her friends have just travelled by bus round Europe. - Present P
By that time her friends had just travelled by bus round Europe. - Past P.
By the end of the week her friends will have travelled by bus round Europe. - Future P.
4, They have just arrived. - Present P.
By that time they had already arrived. - Past P.
They will have arrived by the end of the week. - Future P.
Winnie the Pooh is a famous character of a book by A. Miln . Winnie the Pooh is a bear. He has a friend called Piglet, a pink pig. They also have other friends, Kenga, Roo, Tigger and Christopher Robin by name
2. (задание по переводу)
1. Необходимо знать применение компьютера
2. Это программа написана на особом компьютерном языке
3. Прибор калькулятор получил широкое использование, т.к. лучше других калькуляторов.
Далее непонятно
1-wow
2-really,why?
3-suddenly
4-oh, no
5-well
6-at first
7-but then
8-luckily
9-in the end
10-anyway