I often hear Simon___________ popular songs in his bedroom.
Not only Tom but also his parents __________a walk in the park.
---The box is too heavy to carry. What’s in it? ---Oh, I _________ it ________books.
When I wrote the letter, I kept __________ the words ___________.
--- When will you father _________ in Japan? --- Sorry, I don’t know.
When the bus stopped, some people _______ the bus and some others _________.