Найдите sin a и tg a,если cos a = -0,25

I am fond of gardening.
She was fond of gardening last summer.
Was she fond of gardening last summer?
Was she fond of gardening or playing tennis last year?
Who was fond of gardening?
When was she fond of gardening?
Why was she fond of gardening?
She was fond of gardening,wasn't she
They were fond of gardening, when they visited their relatives in the village last month.
Часть предложений составлены в виде вопросов к одному утверждению She was fond of gardening. если можно оставить эти вопросительные предложения, то тогда получаются 9 предложений

1. She's had a moped since she was 15. 
2. We took a taxi to town that morning. 
3. We played volleyball last night 
4. I'm really hungry. I haven’t eaten since last night. 
5. They visited Colorado last summer.
26.04.16 
Упражнение 5. Put the verbs in brackets in the Past Simple or in the Present Perfect. 
1. Maria (get) got___ some bad news last week. She (be) was__ sad since she (get) has got the bad news. 
2. I (start) started__ school when I was five years old. I (be) have been___ at school since I (be) was___ five years old. 
3. I (change) have changed_ my job three times this year. 
4. I (change) changed__ my job three times last year. 
5. The weather has been hot and dry for many weeks. But two days ago it (rain) rained. 
6. Tom (break) broke___ his leg five days ago. He’s in hospital. He (be) _has been__ in hospital since he (break) broke___ his leg. 
7. Are you going to finish your work before you go to bed? — I (finish) have already finished__ it . I (finish) finished___ my work two hours ago.