I/

2/It isn't a healthy diet.

-> wasn't

3/ I like the idea of the app.

-> liked

4/I'm shopping at the moment.

->I was shopping...

5/ I have some in my basket.

-> had

II/

2/ He said a healthy diet was important.

3/He said everyone ate too much sugar.

4/He said many foods were full of sugar.

5/He said that I was eating too much chocolate.

6/He said that I wasn't eating enough vegetables

I.

2. not be - wasn't

3. like - liked

4. shopped - was shopping

5. look - were looking

6. have - had

II.

2. a healthy diet was important

3. everyone ate too much sugar

4. many foods were full of sugar

5. was eating too much chocolate

6. wasn't eating enough vegetables