что надо добавить к Cl2 чтобы получить NaCl?
что надо добавить к HCL чтобы получить AgCl?

Present simple/Past simple 

Choose right form of verb and write down correct sentences

  I ____ (study) English last night

 I _____(buy) a present for my husband but I (think) he (not like) it

I  ____ (have) long hair when I ____ (be) a little child?but now my hair ____(be)very short

 Janet ____ (write) a letter to George last night

Ellie ____ (brush) he teeth twice a day

Sarah visits John ____ Friday

I ______(take) too much alcohol yesterday evening ? so I _____ (have) a terrible headache now

Alex ____ (can) play the riano when she was 12;now she _____ (can) play both the riano and the violin

Morgan wasn`t so hardworking __________ year