These gases combine with the moisture in the atmosphere to _________ sulfuric acid and nitric acid.

Choose the correct answer in each sentence.

Mr. Moore would like his team members ------ committed to achieving their objectives.

Music, artful arrangement of sounds _______ time.

Choose the correct answer in each sentence.

To ____________   your safety, please keep your hands inside the carriage throughout the ride.

Choose the best answer:

Neil Armstrong, ............ walked on the Moon, lived in the USA.

Scientist are warning that human activity is starting to cause ................... in the Earth’s climate due to increasing temperatures.

.............. electricity you use, ...................  your bill will be.

I love karaoke; I’m not ___ of a singer, though

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

Don't touch the cat. It may_____ you.

Choose the correct answer in each sentence.

Following Ms. Rivera's _______________   statement, the official awards ceremony for Plex Industries will commence.

I want to introduce you to Sharon. She is _____ very nice person. 

I accidentally ................. my ex and his girlfriend when I was walking along a street yesterday.

Choose the best answer:
Are there many students in Room 513?

She drinks a lot less now, to ____________ benefit of her health as a whole.

Definitions of music can change dramatically over a short time, as they have across the world during the 20th  _________.

With all due respect, I think your comments are ................

Choose the correct answer in each sentence.

Passengers  _____________  to take all their personal belongings with them when they leave the plane.

Choose the best answer among A, B, C or D that best completes each sentence: Older people ….. a large proportion of those living in poverty.

Thieves ..................over a million dollars in cash from the Bank of East Asia in Central last month.

Choose the correct answer in each sentence.

 The steroid solution the pharmacy made is ------- contaminated with a fungus because it has sickened more than 160 people.