______ the Atlantic Ocean crosses the equator, the trade winds cause a flow of water to the west.
______ the terrible pollution, so many beautiful fish are fast disappearing in the river.
All of us found ______ difficult to work out the maths problem.
Doyouhappentoknow________?
Let Tom play with your toys as well, Clare—you must learn to_______.
Johnaskedme_______tovisithisuncle’sfarmwithhim.