Повсюду надо вставить глагол *есть*
В настоящем времени
1 предмет >> is
много предметов >> are
В прош времени
1 предмет >> was
много предметов >> were
(В августе - прош время)
In August my rose (1) WAS 30 centimetres tall. The flower (1) WAS small. There WERE 5 leaves (много) on the plant.
(Сейчас - наст. время)
Today is November 7th. Now the rose (1) IS 50 centimetres tall. There ARE two big flowers (много, в крайнем случае, больше чем 1). They ARE pink. It has got lots of leaves. It is so beautiful!