It’s a long time ______ I saw you last.—–Yes, and what a pity it is now that it will be a long time _____ we see each other again

It is necessary for students ______ good studying habits.

. ——I reminded you not to forget the appointment.—— ______.

－Canyou tell me Kitty’s address.－Idon’t know, either. But I’ll tell you her address when she ______ to me.

If his parents are convinced ____the fact that his son always focuses his mind his study