Choose the word or phrase that is a synonym for the verb LECTURE in this sentence: "The professor LECTURED the student about the importance of attending class."

Choose the word or phrase that is a synonym for the verb LECTURE in this sentence: "Professor Johnson LECTURES in anthropology at the university."

Choose the word or phrase that is a synonym for the linking word HENCE in this example: "The student did not complete the reading section in the given time. HENCE, he did not receive a high score." 

Choose the word or phrase that is a synonym for the noun HYPOTHESIS in this sentence: "The scientist's HYPOTHESIS was proven incorrect when the research demonstrated negative results."

Choose the word or phrase that is a synonym for the verb CONTRAST in this sentence: "The image CONTRASTS the light of the sun with the darkness of space in the background." 

Choose the word or phrase that is a synonym for the noun CONCEPT in this sentence: "Many mathematical CONCEPTS were first discovered by the ancient Greeks."

Choose the word or phrase that is a synonym for the verb REQUIRE in this sentence: "Humans REQUIRE water for survival."

Choose the word or phrase that is a synonym for the noun INSTANCE in this sentence: "In most INSTANCES, the disease can be controlled by medication."

Choose the word or phrase that is a synonym for the adjective SELECT in this sentence: "This SELECT group of astronauts has been chosen for the first manned mission to Mars."

Choose the word or phrase that is a synonym for the adjective BRIEF in this sentence: "Now, listen to a BRIEF lecture on the topic."

Choose the word or phrase that is a synonym for the verb IDENTIFY in this sentence: "The scientists have not been able to IDENTIFY all of the minerals in the asteroid."

Choose the word or phrase that is a synonym for the adjective ADEQUATE in this sentence: "Be sure to leave ADEQUATE time for proofreading in the TOEFL writing section."

Choose the word or phrase that is a synonym for the verb PREDICT in this sentence: "Scientists PREDICT that the first manned mission to Mars will happen by 2030."

Choose the word or phrase that is a synonym for the adjective CONSTANT in this sentence: "Gravity is a CONSTANT force of nature."

Choose the word or phrase that is a synonym for the noun CONSTANT in this sentence: "Music has always been a CONSTANT in my life."