If what your friend comes up with surprises you,don’t reject it immediately._____ ___,imagine that it is true.
----Why did you leave that position? ----I ______ a better position at IBM.
Some experts demanded that children _______ time to sleep and play.
The farmer used wood to build a houseto store grain.
According to the periodic table,still some elements undiscovered.
Calculations, which are astronomically exact, have been madewith the use of computers.