A couple of years ________ since the earthquake took place in Wenchuan.
---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 your father _________ in Japan? --- Sorry, I don’t know.
When the bus stopped, some people _______ the bus and some others _________.
The trip to the World Park __________ almost two hours and it was _________.