27. As five children under 10 got drowned in a southern province, it is not socially _____ for parents to leave children unattended at that age.

This blue car ____________ be Bob’s bcause hiscar is black.

Why _________your books to find the answers

In the green mountains ____ many rivers, breeding the people and living beings there.[ ]

Lack of money _____ her not continuing her studies．