Look at the boy running on the playground. Is it David? —It ______ be him. I saw him go to the teachers’ office just now.

Excuse me, are these ______ new shoes?—No, they aren’t. ______ are black over there.

We want a teacher to teach_______.

Tom was born ________ June 3rd, 1997.[ ]

______ in the near future, vision-phones will come into wider use in our ____ life.