He wants to have ________ third cake,because ________ second one is too small.
—He must be busy doing his homework right now.—I imagine____.
After living with his grandparents in the countryside for ten years, the boy returned to the big city ____ his parents worked.
— ____ can I deal with such a situation? — Take ____ measure you think best.
____ it will do us harm or good remains to be seen.
The river, ____ are covered with trees, is very long.