I don't think you can work out the maths problem ____ the teacher's help.
when the newspaper boy got to a blue door, _________, which frightened him away as fast as possible.
With a lot of difficult problems_____________, the newly-elected president is having a hard time.
_____________, she is of great help in the work.
.Nobody knew when the fire ________, but they knew it ________ the next morning.
My mother opened the drawer to _______ the knives and spoons.