If we had taken such effective measures much earlier, the river__________so seriously now.
The looks on the children’s faces suggested that the question was really .
The doctor thought ____ would be good for you to have a holiday.
—Have you finished the book? —No. I’ve read up to _____ the children discover the secret cave.
It never occurred to me _____ you could succeed in persuading him to change his mind.
To improve the quality of our products, we asked for suggestions had used the products.