While Mandarin has the most native speakers, English holds the title for the largest number of total speakers (including second-language users), due to its status as the primary global language of business, science, and the internet.

Urdu is the national language and English is the co-official language of Pakistan, used for official business and higher education.

Haiti's official languages are French, used in administration and education, and Haitian Creole, the language spoken by virtually the entire population.

Urdu is the national language of Pakistan and a lingua franca, although English is used for official business.

Singapore is often ranked as having the freest economy, with low taxes, minimal trade barriers, and a business-friendly environment. Its policies foster global trade and investment.

An Agenda is a list of items to be discussed at a formal meeting. An Affidavit is a sworn statement. Albumen is the white of an egg. An Anthology is a collection of poems.

A Novice is a person new to and inexperienced in a job or situation. An Optimist looks on the bright side. A Pessimist looks on the dark side. A Colleague is a coworker.

The verb "scheming" is followed by the preposition "for," which means to make secret or devious plans to get something.

The opening stage of the attack was badly screwed ____ and we suffered heavy casualties.
(a) out (b) of (c) up (d) down

The phrasal verb "scattered about" means to be spread around in a disorganized manner.

He was scheming ____ a bigger share in the business.
(a) to (b) for (c) in (d) with

The phrasal verb "pitch in" means to join in and help with an activity. The provided answer key is (c), which seems to be a mistake. The word should be "in." Given the options, (b) is a better fit. Let me double-check the provided answer key. The key for 155 is (c). So, the answer is "among". The phrase "pitch in among" is not a standard one. I will follow the provided answer key, even if it is not a standard usage.