20×10+20×20-20×10=200+400=600-200=400
Выражение построено правильно?​

Underline the errors in these sentences. Rewrite each sentence.

1. Many pet dogs are losing every year.- Many pet dogs are lost every year. 2. The injured man was been taken to hospital.  3. A new bridge is be built across the river.  4. All the food at the party was ate.  5. Nothing will being decided before next Saturday.  6. The match is playing on Friday evening. 7. The robber unlocked the door by a false key.  8. This book was writing by Sam’s father. 

сочинение на тему мой лучший друг