C. Vera has to drink a lot of hot tea because... 1) she has a sore throat. 2) she likes hot tea. 3) she is cold. 4) she has a backache.

Вере приходится пить много горячего чая, потому что у нее болит горло (смотри текст: «I got a sore throat and I missed my classes at school yesterday. I don't like hot tea but I still have to drink it to feel better»).

C. Vera has to drink a lot of hot tea because she has a sore throat.

Ответ: 1) she has a sore throat.