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I (А1) ... years picking my teenage son up after school and taking him to karate classes. I used to watch him training sometimes, but more often I would read my book. Then one year he (A2) ... the chance to go on a one-week karate summer camp in the south of Spain. I planned to sunbathe and swim while the kids trained, but the instructor had other ideas. We (A3)... when he wanted me and the other parents to take part. I thought I (A4)... able to do it. I was a middle-aged, overweight woman, but by the end of the week I (A5) ... to keep training. When I got back home, all my friends thought I was mad to take up such an aggressive sport. But it's mainly about strength, control and self-defence. After only five years, I (А6)... my black belt. Doing karate (A7)... me much more confidence. I (A8)... strong and fit now and I have a lot more energy, and I've still amazed myself with what I can do.
А1.

1) was spending

2)spent

3)spend

4) had been spent

А2.

1) gave

2) had given

3) was given

4) has been given

А3.

1) had hardly arrived

2) have hardly arrived

3) arrived hardly

4) were hardly arrived

А4.

1) would never be

2) will never be

3) had never been

4) will have never been

А5.

1) was decided

2) was deciding

3) have decided

4) had decided

А6.

1) have been achieving

2) achieved

3) was achieved

4) had been achieved

А7.

1) has given

2) was giving

3) is given

4) will have given

А8.

1) am also felt

2) also feel

3) have also felt

4) have also been felt