II. Заполните свободные места предлогами и переведите предложения.

without; into; of ; on; in the centre; through; within; with

1. The tricuspid valve opens and the blood goes __in__ the right ventricle.
2. The aortic valve opens and the blood leaves the aorta.
3. This is the sound ___the valves closing.
4. The blood oxygen comes into the left side of the heart.

QuietW    2   15.05.2020 22:24    0