If found oil when we open low oil level plug of separator, it indicates ____.

When he got home, he found the window open and something（) .

When we arrived, we found the meeting room crowded with _______ students.A、quite a fe

We have found oil under the North Sea.（英译中)

If in doubt as to the true water level when a boiler is being oil－fired, you should _____.

Scientists found that when certain parts of the brain were _____ we lost the ability

When he the door, he found his keys were nowhere.A. would open B. opened C. had opened