Афанасьева, Михеева, Баранова, 7. Учебник. Unit 3. Step 3

1c, 2a, 3b, 4c, 5b, 6a, 7b.

1b, 2d, 3c, 4f, 5e, 6a.

1) perfect;
2) valley;
3) border;
4) chain;
5) stretch;
6) flows;
7) flow, flowed;
8) lilies of the valley;
9) coasts;
10) plains.

1) … have broken.
2) … have you chosen?
3) … has never ridden …
4) … he has just driven …
5) Where has Nick gone? — He has gone …
6) … she has never broken …
7) have you chosen …?
8) Have you ever ridden …?
9) have already driven …
10) Where has she gone? — She has gone to …

1) border;
2) valley;
3) coast;
4) plain;
5) stretch;
6) flow;
7) perfect;
8) chain.

1) the Great Lakes;
2) New York;
3) the Mississippi;
4) the Appalachians;
5) the Rocky Mountains;
6) Washington, D.C.;
7) the Great Plains.