A lot of language learning,______ has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.
If you have to plough the field anyway, you _____ as well plant crops at the same time.
At the sight of the scene of war, my _____ race back more than 50 years to the dark days of 1940.
The _____ of blood always makes him feel sick.
-- Do you still remember when we went to the Summer Palace? --- I can’t remember it well, but it _____ sometime last July.
---These boxes are too heavy for me to move. ---Don’t worry; I’ll give you a hand ______ them.