Tom didn't tell me for his new car.
a how much had he paid b how much he had paid]
c he had paid how much d he had how much paid
They had lunch in the park,
a hadn't they b didn't they c won't d aren't
A dentist likes to help people's teeth better.
a makes b make c making d has made
Mary and i want to Dragon Boat races tomorrow.
a see b look at c watch d look
i always have a headache.(否定句)
i always a headache.