Lesson 45 Subject-Verb Agreement and Intervening Preposition

Choose the verb in parentheses that correctly completes the sentence by agreeing with the subject.

The rain forests of the earth (occurs, occur) in places where there is much rainfall.

• occurs

• occur

Choose the verb in parentheses that correctly completes the sentence by agreeing with the subject.

The rain forest ecosystem, to biologists, (is, are) the source of much diversity.

• is

• are

Choose the verb in parentheses that correctly completes the sentence by agreeing with the subject.

Rain forests in a tropical area (is, are) warm and humid.

• is

• are

Choose the verb in parentheses that correctly completes the sentence by agreeing with the subject.

The number of tree species (is estimated, are estimated) to be about 3,000.

• is estimated

• are estimated

Choose the verb in parentheses that correctly completes the sentence by agreeing with the subject.

The area around the trees (is filled, are filled) with mosses, vines, and other water-loving plants.

• is filled

• are filled

Choose the verb in parentheses that correctly completes the sentence by agreeing with the subject.

The rain forest, with complex food chains, (recycles, recycle) nutrients constantly.

• recycle

• recycles

Choose the verb in parentheses that correctly completes the sentence by agreeing with the subject.

No dead plants on the ground (is, are) left there for long.

• is

• are

Choose the verb in parentheses that correctly completes the sentence by agreeing with the subject.

Plant matter from different species (decays, decay) quickly and is reused as food.

• decays

• decay

Choose the verb in parentheses that correctly completes the sentence by agreeing with the subject.

Plant life, with many animal species, (keep, keeps) the rain forest teeming with noise and motion.

• keeps

• keep

Choose the verb in parentheses that correctly completes the sentence by agreeing with the subject.

The mammals of a rain forest (includes, include) leopards, jaguars, bats, and different monkeys.

• include

• includes