If you send the best wishes to your motheron Mother’s Day,____will give her a great surprise.

— What are you mailing, Tom? — A textbook ______ a new method of teaching physics I want my friend to take a look at it [ ]

uld do more such exercises in thefuture, I think, ___________ we did yesterday.

Seeing the man on the bike with a boy at the front and the other at the back, the policeman signed _______stop

There is some doubt _____ theconcert will be held as the company intends to redecorate the stadium nextweek —What a pity!