What do you think ________ the book?
[ ]
Where ________ you go on vacation last summer?
A．do
B．did
C．are
D．were
I didn't have money ________ a taxi.
Unfortunately, my kite ________ at that time.
Do you study ________ exams?
I ________ home yesterday.
Where ________ you ________ on vacation?
What do you think ________ your vacation?
Some workers in my father's factory work ________ night and rest ________ the day.
They bought much food ________ Christmas.