A dark nebula consists of (A) {a cloud of} interstellar dust (B) {enough dense} (C) {to obscure} the stars (D) beyond it.

• A
• B
• C
• D

(A) Commercially honey is heated and (B) filtered in order to (C) stabilize and clarify (D) it.

• A
• B
• C
• D

The (A) various parts of the body require (B) so different (C) surgical skills that (D) many surgical specialties have developed.

• A
• B
• C
• D

One reason birds (A) {have been} so successful is (B) {because of} their (C) able to escape from danger (D) quickly.

• A
• B
• C
• D

The (A) wood of the rosewood tree (B) {is used} to (C) do fine (D) musical instruments.

• A
• B
• C
• D

Chemical engineering is based (A) on the (B) principles of physics, (C) chemists, and (D) mathematics.

• A
• B
• C
• D

Ballet performers (A) {must be} believable (B) actors and actresses (C) {as well} as (D) experts dancers.

• A
• B
• C
• D

Venus, (A) {the second} planet (B) from the Sun, is (C) {exactly almost} the (D) {same size as} the Earth.

• A
• B
• C
• D

P. T Barnum opened (A) {his own} circus in 1871 and (B) become the (C) {most famous} showman of his (D) time.

• A
• B
• C
• D

The way a (A) {child plays} with other children reveals (B) {a lots} about (C) {the child's} emotional (D) development.

• A
• B
• C
• D