1£®________ the reason, it is for sure that yawning can be passed from person to person.

Whatever B. Wherever C. Whichever D. However

2£®Your brain uses information from both your nose and your tongue to ________ what something tastes like.

point out B. give out C. figure out D. pick out

3£®They felt ________ it was high tax and low income ________ contributed to the extreme misery of the working people at the bottom of the ladder.

/£»that B. that; which C. that; what D. /; which