He trained hard in puzzle-guessing, a sort of children’s game, all year, _____ still failed to reach his best form in all the tests given to both adults and children.
A good idea ______me! Which of the following is Not Right?
A number of tests have been conducted to _________ that these drugs have no side effects.
---Why did Tom become wealthy this year?---Because he sold _________________ he did last year.
Not until his father came back ____________ to bed.
The doctor said that maybe his disease is __________ the water he drinks.