---I’m sorry to______ your time.
---It doesn’t matter.
---What's wrong with Tom?
---He's got a bad headache.And the doctor asked him ________ in bed for several days.
---Wouldyou like some more(又,再)?
---_______.I'm full.
---What ______ your parents ______?
---They're both doctors.
---______?
---He can ride a horse.
---What's your father?
---______.
---What's his name?
---His name is ______.
---Can they ______ Chinese?
---Yes, they can.
---______ is the river?
---It's about 1,384 kilometres.
---______ did he go to the USA?
---Only once.