Correct Answer: B

Rationale: The word 'that' is the correct relative pronoun to use in this context to refer to the people who were present that night. 'Whom' is used for objects of a verb or preposition, 'which' is used for things, and 'whose' is a possessive pronoun.

Correct Answer: B

Rationale: The word 'annual' refers to something that happens once every year. 'Regular' could mean frequent but doesn't specify a yearly event. 'Biennial' refers to something occurring every two years, while 'holiday' relates to a special day of celebration, not necessarily an annual event.

Correct Answer: B

Rationale: 'Patent' is the correct answer as it means something that is open or unobstructed. Choices A, C, and D do not convey the meaning of 'open.' 'Inverted' means turned inside out or upside down, 'convent' refers to a religious community, and 'converted' means changed into a different form or function.

Correct Answer: A

Rationale: The term 'fracture' refers to a 'break' in the bone. A fracture is a medical condition where there is a crack or break in a bone. 'Brake' refers to a device used to stop or slow down a vehicle. 'Cut' means to make an opening or incision with a sharp tool. 'Cure' means to relieve a person of the symptoms of a disease or condition.

Correct Answer: A

Rationale: 'Occluded' means blocked or obstructed, making 'Obstructed' the correct answer. In the context of a patient having an occluded artery, it implies that the artery is blocked. The other options, 'Open,' 'Broken,' and 'Cloudy,' do not accurately describe a blocked artery.