решить систему уравнения 
 2х-у^2=5
 х+у^2=16

Раскройте скобки, употребив глагол в нужном времени (Indefenit,Continuous,Active,Passive).

1. Look!How many birds (to fly) high up in the air!

2. Yesterday he (to tell) us for two hours about his trip to India.

3. I (to watch) TV, when somebody (to knock) at the door.

4. These goods (to export) to all European countries.

Как склоняется число 2637