. —Where have you been all day?—I _______ some former classmates and I couldn’t get back until it was dark.
Was it midnight_________ you fell asleep while reading with the candle still burning?
She spoke very confidently because she wanted to make a great___________ on her employer.
The achievements of the greatest minds in science could never have been reached________ the patient work of hundreds of others.
The plans should be drawn as ________as possible,showing all the measurements.
In that south American country, _____bicycle is not_______ popular means of transportation.