The boy’s bad behavior at school __________ his mother many sleepless nights.
She knows a lot about China as she has been to China ________.
--- May I help you, sir? --- Yes, I bought the TV the day before yesterday, but it ______.
______ the bus until it ______..
The 70-year-old man ______ exercises in the morning.
I don’t think that it’s true. She’s always ______ lies.