Premier Wen’s three-day visit to Japan, _____as the “ice-melt” trip, make a great difference to the relationship between China-Japan.
I want to use the same tools _______used in your factory a few days ago.
I have two grammars, ______are of great use.
That is not the way ______I do it.
He is working hard, ______will make him pass the final exam.
The reason ______he didn't come was ______he was ill.