1.It would be best if you don't enter that room right now,so as not to disturb him.
2.I prefer that people don't call me Dr.Smith,because I can't imagine being addressed that way.
3.Jeans are inappropriate for such a formal occasion as this.
4.He originally expected that he would be able to memorize these terms in a month.
5.Do you consider English programs important in improving English skills?