Write the second sentence so that it has the same meaning to the first one. 1. It is compulsory for them to study music and dancing every week. They _______________________________________________________________. 2. Van Cao composes Viet Nam's national anthem Tien Quan Ca. Van Cao is the _____________________________________________________. 3. Which do you prefer, pop music or rock music? Which do you like _________________________________________________. Mn giúp e với