When preparing a diet, a person should be aware that vitamin D acts to increase the amount of calcium absorbed by the body.

A. schedule of exercise

B. medicinal chart

C. study of longevity

D. nutritional plan

The augmentation in the population has created a fuel shortage.

A. increase

B. necesity

C. demand

D. decrease

Although we argued with him for a long time, he stood his ground.

A. felt sorry for us

B. changed his decision

C. wanted to continue

D. refused to change his decision

You never really know where you are with her as she just blows hot and cold.

A. keeps going

B. keeps taking things

C. keeps changing her mood

D. keeps testing

He had never experienced such discourtesy towards the president as it occurred at the annual meeting in May.

A. politeness

B. rudeness

C. measurement

D. encouragement

He was asked to account for his presence at the scene of crime. 

A. complain

B. exchange

C. explain

D. arrange

No vehicle weighing over 3.5 tons is allowed on this bridge, according to traffic signs placed at both ends of the structure.

A. corruption

B. construction

C. connection

D. confusion

The shop assistant was totally bewildered by the customer’s behavior.

A. disgusted

B. puzzled

C. angry

D. upset

We decided to pay for the car on the installment plan.

A. cash and carry

B. monthly payment

C. credit card

D. piece by piece

Sorry, I can’t come to your party. I am snowed under with work at the moment.

A. interested in

B. busy with

C. relaxed about

D. free from