John has great singing _____________, but to become a real singer, he needs a lot of necessary training and practice.

According to the recent research, heavy coffee drinking and heart attack is not necessarily ______ and effect.

The happy ________ of children playing in the garden disappeared, and it was quiet again.

A $1000 ____will be offered to anyone who helps to return the lost jewel .

lt seemed such a       that people just stood by watching the old lady lying on the ground suffering pains.