He started to learn English in 1990 and in the years ________ he kept on using it in his work.
Luckily, we’d brought a road map without ______ we would have lost our way.
Is this the reason _______ at the meeting for his carelessness in his work?
In the office I never seem to have time until after 5:30 pm, _____ many people have gone home.
All of the flowers now raised here have developed from those _______ in the forest.
Our company will move to a tall building _______ we worked two years ago.