помогите выбрать правильный ответ и переведите полученные предложения.
1. The letter..........yesterday.
a)was posted b) were posted c) is posted
2. The children......some food.
a) were gave b) is giving c) were given
3. Two million books.......... to Russia every year.
a) was sent b)are sent c) will be killed
4. The president ........... next year.
a) was killed b) is killed c) will be killed