_____ turned out that this material was neither silk nor cotton.

The reason _______ matters most in his failing the English test is _______ he pays little attention to sentence structures. 

When you are reading fast，your eyes will be one or two word groups ahead of______ your mind is taking in.

---Is there anything else I can do for you, Jeff?---No. Thanks. I really appreciate          when you lent all your notes to me before the exam.

—Is ________ here?—No, Peter and Tony have asked for leave.