I had been working on math for the whole aftensoon and the numbers before myeyes[ ]

The repair work may take us a long time，but it’s worth trying

n in a hurry, ___________．How can it be satisfactory

“The day is coming ________ telegraph wires will be laid on to houses like water or gas.” Bell wrote to his father.

This printer is of good quality. If it ________ break down within the first year, we would repair it at our expense.[ ]