You should take an umbrella with you_____ it might rain on the way A. in case B .so that C because of D. as if
It is amazing that the little boy can swim ________the river ________100 meters in width.
According to the recent research, heavy coffee drinking and heart attack is not necessarily ______ and effect.
What ________surprise you gave us by wearing such funny________ at so serious a meeting!
--- How about the debate held in your class? --- ______
Knowledgeable as he is, the expert was unwilling to offer advice to ______ he thought was not qualified.