Продолжение того текста.Необходимо раскрыть скобки. Прошу,помогите!!Буду очень благодарна!The

Продолжение того текста.Необходимо раскрыть скобки. Прошу,помогите!!Буду очень признательна!
The Cyrillic alphabet is the alphabet used in Russian text. It is one of the most (B13)_________________________(wide) used alphabets in the world.
The alphabet is used in (B14)_________________________(vary) languages, including Russian, Bulgarian, Serbian and Ukrainian.
It began in the (B15)_________________________(ten) century in the Bulgarian Empire. It was created by two Greek brothers, Cyril and Methodius.
It was formed from the Greek alphabet, although there are many (B16)_______________________________(differ) between the two.
Some people would like the alphabet to be called the Russian alphabet,
to refer to Russia, just as the Greek alphabet refers to Greece. They (B17)_______________________________(agree) with the name Cyrillic.
The alphabet recently became the EUs third (B18)_______________________(office) script, after Latin and Greek, when Bulgaria joined the EU.