What are you doing —I’m reading the book ______you lent me last week.

Everyone here _________ playing basketball.

Though measures have now been taken to prevent further price hikes, many people remain _______ over the rising cost of food.

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

The hotel will ________ breakfast, but we will have to go out for lunch and dinner．