Because they fly, bats are often mistaken for birds; ________, bats are mammals, not birds.

Find the mistake in each of the following question: 

The assumption that smoking has bad effects on our health have been proved.

Our new neighbors are quite nice ______ they are sometimes talkative.

Choose the best answer:
Friendship is a two-sided , it lives by give-and-take.

It is likely that artificial intelligence might decide to ____ an end to humanity simply because it surpasses human intelligence.

Employees who have not yet registered on the new company website must do so .................

Choose the correct answer in each sentence.

The memo sent by Mr. Lee addressed a few  ______________  that were discovered during the quarterly inspection.

Find the mistake:

The leader demanded from his members a serious attitude towards work, good team spirit, and that they work hard.

Marco Polo Airlines can upgrade a ticket only ...................... it is more than 48 hours prior to departure time.

Choose the correct answer in each sentence.

Mervin Financial Group offers low- interest repair home mortgages to first-time ____________.

Choose the correct answer in each sentence.

Confident that Mr. Takashi Ota was -------- more qualified than other candidates, Argnome Corporation hired him as the new vice president.

Our team has just won the last football match." - "______" 

Choose the correct answer in each sentence.

The goal of the program is to make health services readily available to those in both rural and urban _____________.

Choose the best answer:
When he is nervous, his hands …………

Even though we strive to ............ that all of our products meet the highest quality standards,

Internet search engines can help to predict the weather as well as traffic jams in a city.

Although he is very old, he can walk to the station.

She found ______ without any friends after alienating ______ all with her unpleasant behavior. 

Choose the correct answer in each sentence.

------- its distinguished faculty in the science department, the university has state-of-the-art laboratory facilities.

My suggestion is that we try ............... one person to send out all the mailings and maintaining records of the mailings in our database.

__________is wiping out many kinds of plants and animals.