Of the seven days in a week, Saturday is said to be the most popular ______ for a wedding in some countries.
—What are you anxious about? —_______.
The boss refused to sell the car for ________ he thought was not satisfactory.
―The river runs clear. ―We all appreciate the importance the local government has_______ the environmental protection.
Be careful that a good name of a product doesn’t _______ mean good quality of it.
What we all know is that the old scientist, _______ life was hard in the past, still works very hard in his eighties.