1.are
2.cooks
3.doesn`t work
4.is not. is working
5.are doing. am learning
6.gets
7.are you living
8.do you understand
9.Where is Ann? She is sleeping.
10.watches
- Have you seen the new Star Wars movie?
- No, not yet
-You should watch it!
-Okay, I hope it's still in cinemas
-Let's arrange
-Let's meet up at 4pm tomorrow at the cinema
-Ok bye then
-Bye-bye
Амфотерность оксида и гидроксида заключается в том, что они могут вступать в реакцию как с кислотами, так и с щелочами.
BeO + H2SO4 = BeSO4 + H2O
BeO +2NaOH + H2O = Na2[Be(OH)4]
Be(OH)2 + H2SO4 = BeSO4 + 2H2O
<span>Be(OH)2 + 2NaOH = Na2[Be(OH)4] </span>
1) Will you do my homework today?
2) We're going to swim in the river next summer, is not it?
3) These boys from our local football team, is not it?
4) Mary is a very good student, right?
5) Tom does not watch TV every day, is not it?
6) Your mother is drinking tea in the morning?
7) We have received failing grades, is not it?
8) It does not speak German, right?
9) Linda will be responsible for the cultural program, is not it?
10) Are you going to school?
11) Nadia did not go to the theater, is not it?