During the study-week Vicky lives in the school’s boarding institution, but she spends the holidays with either her grandfather in Golf City or with her half-sister in the capital city, both of whom support s her emotionally and financially. It's OK now. 'Both of whom refers to two pwople; itt therefore needs to be followed by a plural verb fprm.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.