— ________ did the professor give you much advice?— The choice of a career.
If the time is ________ exactly,the paper can be finished on time.
—________ you interrupt now?Can't you see I'm on the phone?—Sorry,sir,but it's urgent.
________ 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.