1) The channels (to devote) to more specialized topics.

2) My Mum (to do) aerobics for a year and she (to look) great.

3) The Britons (to use) double-deckers for hundreds of
years.

4) My friends (to win) a competition.

5) She (to read) the book since morning.

6) They (to watch) the talk show for an hour already,

7) Jack (to arrive) just home.

8) He (to travel) around the world since July.

9) The train (to arrive) already at the station.

10) Tom (not go) to the language courses last week.

1) The channels are devoted to more specialized topics.

2) My Mum has been doing aerobics for a year and she looks great.

3) The Britons have used double-deckers for hundreds of

years.

4) My friends has won/won a competition.

5) She has been reading the book since morning.

6) They have been watching the talk show for an hour already,

7) Jack has just arrived  home.

8) He has been travelling around the world since July.

9) The train has already arrived already at the station.

10) Tom didn't go to the language courses last week.

Объяснение: