Помогите пожалуйста. Только верно. Complete the sentences with the right forms

Помогите пожалуйста. Только правильно.
Complete the sentences with the right forms of nouns and verbs.
Her good (look was/ looks were) lost when she grew older.
Economics (is/ are) the study of the management of money and goods.
His aggressive (manner/ manners) of speaking (have/ has) never failed to shock me.
Im afraid his (earning is/ earnings are) not sufficient to support his family.
The clergy (comprises/ comprise) the ministers, priests etc of the Christian religion.
The outskirts of London where the Townsends live (is/ are) a very attractive area.
The team (consist/ consists) of four doctors and seven nurses.
The means of their family (is/ are) rather reduced.
My (custom is/ customs are) to go for a walk on Sunday.
After the cremation the (ash was/ ashes were) scattered at sea.