It remains to be seen ________ the newly formed committee's policy can be put into practice.
It is the education _________ he received when studying abroad _________ has made him such an excellent manager.
_________ the lecturer more clearly, I arrived early and chose a front seat.
Talking about buying cars, I prefer a car less than 100,000 yuan to _________ over the amount.
Through the economic reform, the economic situation of China _________ much better than it used to be.
When you rewrite the paragraph, I advise you to leave out is thought unnecessary or misleading.