This machine, ______for many years, is still working perfectly.

Sarah wondered what ______ her 70-year-oldgrandpa would make of the new computer.

24We have strong __________ for believing that the mine accident inHeilongjiang was due to the poor management

The bargain they reached with their employers was to reduce their wage demand and accept a shorterworking week______.[ ]

They decided _______ by bus.