химическим способом отделить медь из смеси медных ошурок с порошком цинка???

Плиз напишите "сказку про правила хорошого поведения" ДАМ 10 ПУНКТОВ

Добрый вечер, помогите пожалуйста с заданиями по английскому, а то я что то не могу подобрать подходящее слово.

1) Fill in the gaps with the correct Perfect Continuous forms of the verbs in brackets.
1 I ... in this neighbourhood for six years now. (live)
2 His girlfriend dumped him because he... another girl behind her back, (see)
3 The doctor asked him how long he ... unwell, (feel)
4 They always go there for their holiday. They ... there for years, (go)
5 By the time I leave school, I ... English for more than ten years, (learn)

2) Complete the sentences by changing the verbs in brackets into appropriate tense forms.
1 Tara has broken up with Tony. Now she ... Frank, (date)
2 Tara and Frank ... for two weeks, (date)
3 We didn't go for a walk because it... at the time, (rain)
4 The playing field was almost under water because it... for days, (rain)
5 This time next week, Anthony ... children how to abseil, (teach)
6 By the end of his stay in Mexico, Ben ... Spanish for a month, (learn)

3) Put the verbs in brackets into the correct tense forms.
1 I see you're reading The Da Vinci Code. How long ... it? (read)
2 I see you're reading The Da Vinci Code. How much of it... ? (read)
3 We said 'enough is enough' and stopped working. We ... what we could. (do)
4 We said 'enough is enough' and stopped working. We ... all day. (work)
5 They're on holiday. When their holiday is over, they ... for two weeks and ... six different countries, (travel, visit)

Составьте уравнения электролитической диссоциации следующих веществ при растворении в воде:Fe(OH)2;H2SIO3,03;H2S;Al(Oh)3 ПОЖАЛУЙСТА ПОМОГИТЕЕ

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