Question

употребите правильную форму глагола to have
1 Today it...warm,but yesterday it...cold.

2There....25 students in our group last year.

Answer 1

Здесь глагол have  никак не подходит!  глагол  to be!

1 Today it is warm,but yesterday it.was cold.

2There.were 25 students in our group last year.