Don't expect too much of him ; he is _______ a child.
Measures have been taken __________ the spread of the HIV.
In __________ preparation for Shenzhou If, scientists need __________ knowledge of weather changes.
—Thanks so much for everything. You have certainly made my stay very pleasant.—__________.
—__________ for the fire!—It's OK. I'll be careful enough.
I remembered __________ the door before I left the office, but forgot to turn off the lights.