Question

1 cycling is...wonderful way to see the country.
2 Paris is one of ....most beautiful cities in the world.
3 l've bought ....tasty apple pie.
4 Cardiff is.....capital of Wales.
5 People in the USA speak ......English language.
6 Sometimes it's very difficult to tell .....truth.

Answer 1

1) a
2) the
3) a
4) the
5) -
6) the

Answer 2

1 cycling is..a.wonderful way to see the country.
2 Paris is one of ..the..most beautiful cities in the world. 
3 l've bought .a...tasty apple pie.
4 Cardiff is..the...capital of Wales.
5 People in the USA speak ...the...English language.
6 Sometimes it's very difficult to tell ...the..truth.