— Could I have the small table by the window?— Sorry, sir. It ______ in advance.
John is the tallest boy in the class, _______ according to himself.
What the science teacher does and says ____ of great importance to college students.
The year 2007 ______ remarkable changes in Changzhou’s landscape.
The children were catching butterflies in the garden. Some caught a lot, and others caught _______ at all.
How wonderful to go away for a month, _____ all worries and responsibilities!