_________ is my friend. _________ name is Tom.

At the meeting, they discussed three difficult _______ to the study of mathematics.

Their school days are busy and the children don’t get home _____7 o’clock p.m.

________young people see and hear in the media helps them to figure out how the world works.[ ]

.What a great weight the mother felt _____ her mind the moment she found her lost son!