customer withdraws money from the bank, it isrequired to leave his signature. But how can we be sure it is_______

Nanjing is a beautiful city and it _____ again. [ ]

The world’s population hit 7 billion on Monday among celebrations and concerns about_______ the growing number of people will affect the earth’s resources [ ]

The little girl trembled___________fear when she found a snake on the ground.[ ]

I have a headache.—_______.