How much time did you __________ on the project?
________ several times,he still couldn't understand how to operate the machine.
Someone ________ his car in front of my house and it's blocking my way.
________ here yesterday,he could have seen Jackie Chan.
Some passersby witnessed the car accident ________ five passengers were killed,a baby included.
Never believe anything ________ other people have believed it.Use your own head.