Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

Thanks to artificial intelligence, the phone's voice-recognition system converts the sound into numerous data.

Light ............... are small planes with seats for no more than about six passengers. 

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Volunteers may be required to obtain Red Cross _______ in order to serve through hospitals and healthcare organizations or provide disaster relief.

Choose the correct answer in each sentence.

Audio-One is so ___________   about the quality of its products that it offers a money-back guarantee for all items.

Choose the correct answer in each sentence.

The vacant rooms on the inn's second floor have ____________   been cleaned.

Choose the correct answer in each sentence.

During the peak season, it is  _______________  to hire additional workers for the weekend shifts.

Choose the correct answer in each sentence.

The riskiest  _____________  of the development of new medications are the trials with human subjects.

Governments decided to take  .........  measures to deal with terrorism.

Choose the best answer:
Pupils are learning .............

Tom _____ before we arrive there. 

Choose the correct answer in each sentence.

A minor electrical malfunction was discovered by the pilot  ____________  before the plane took off.

Choose the correct answer in each sentence.

Although the alternative route was ------ marked, many drivers ended up getting lost.

Floods have completely .................. the farmer’s crops.

Choose the correct answer in each sentence.

In ____________   with lack of exercise and high stress, poor dietary habits can cause significant health problems such as heart disease, high blood pressure, and diabetes.

Choose the correct answer in each sentence.

It is critical that the employees understand ------ it is important to follow health and safety precautions at all times.

Choose the correct answer in each sentence.

The Family Store  ____________  closed on November 31, 2012 while we revamp the store and reopening again in 2013.

Choose the best answer:

She broke the vase because she was ...................

Choose the correct answer in each sentence.

According to the latest news, HRT, Inc. is preparing for the  _____________  of a major new product.

British Columbia is the westernmost Canadian province and the _______ province on the Pacific Ocean.

The players' protests ................ no difference to the referee's decision at all