We collected a lot of books to get the necessary information but only half _________helpful, so we failed to finish the work.
The cost of living in Glasgow is among the lowest in Britain, ________ the quality of life is probably one of the highest.
The sound of the birds __________happy memories of my childhood holidays.
In the USA, _______ Thanksgiving Day is a harvest festival.Traditionally, it is _______ time to give thanks for the harvest and express gratitude in general.
Measures have been taken to solve the problem, but it may be some time ____ the situation improves.
Hoping he would not disturb his sleeping father, Bob stole in, ____ and waited for him to wake up