Question

do now: agreement quiz directions: for each question, choose the answer that completes the text with the most logical or precise word or phrase. shade in the bubble for the letter corresponding to the answer you think is best. 1 ** for centuries, the primary red on an artists palette came from the compounds of lead and mercury. the pigment known as
ed lead\ __ in ancient china, egypt, greece, and rome. (a) have been used (b) was used (c) were used (d) used 2 jane and maria porter, who wove fascinating tales out of accounts drawn from history books, are often credited with the invention of the first historical novel. certainly the first to achieve critical acclaim with novels whose protagonists included a mix of real figures and invented characters. (a) she was (b) some were (c) they were (d) this was 3 despite some similarities, the four largest planets are quite distinct from one another. jupiter and saturn are much larger than uranus and neptune, and each pair of planets a different composition. (a) has (b) have (c) having (d) would have 4 over the last several decades, the internet has fundamentally changed how we live, work, and play. from virtual classrooms to electronic banking to online gaming, many of our daily actions and interactions are now governed by the web. while has numerous benefits, it has some drawbacks as well. (a) that (b) these (c) this (d) this technology 5 ** exercise can help people lose weight and avoid gaining it. however, identifying the cellular mechanisms that underlie this process __ difficult because so many cells and tissues are involved. (a) are proving (b) has proven (c) have proven (d) is proven

Explanation:

1. The subject "The pigment known as'red lead'" is singular. The past - simple passive form "was used" is appropriate as it refers to an action in the past.
2. "Jane and Maria Porter" is a plural subject, so "They were" is the correct choice to refer to them.
3. The subject "each pair of planets" is singular, so "has" is the correct verb form to show possession of a different composition.
4. "This technology" clearly refers to the Internet mentioned earlier in the sentence.
5. The subject "identifying the cellular mechanisms" is a gerund - phrase acting as a singular subject. "Has proven" is the correct verb form as it shows an action that has been true over a period of time.

Answer:

1. B. was used
2. C. They were
3. A. has
4. D. this technology
5. B. has proven