—What do you think of that tea set as a gift for Mary’s birthday?— .
“How is your tour around the North Lake? Is it beautiful?” “It ____ be, but it is now heavily polluted.”
You had better go at once, ____ you?
Every morning the pupils read the texts ____ in the classroom.
The number of people invited ____ fifty, but a number of them ____ absent for different reasons.
You’ll find this map of great ____ in helping you to get around London.