Not until his father came back ____________ to bed.
They’ve arrived at the flooded areas, but we don’t know ________ they got there.
People with learning disabilities can learn to drive, but it will take ________ effort.
Rose, don’t pick the flowers in the park, _______?
Every second counts in the exam, _________ means you must make the best use of the time available.
John isn’t here right now. He ______ Mr. Black’s office. Perhaps he______ in several minutes.