Question

1. the air in the rainforest was humid, making the heat seem even more smothering than before.

a. hot
b. damp
c. hazy
d. volatile

1. the balloon, loose from its string, rose up into the sky, a shiny purple sphere.

a. circle
b. globe
c. oval
d. nodule

1. after the storm caused raw sewage to seep into the ground - water, the water department had to take measures to decontaminate the citys water supply.

a. refine
b. revive
c. freshen
d. purify

1. please say something that will edify the audience.

a. perplex
b. annoy
c. instruct
d. amuse

1. the volcano lies dormant now, but we feel sure that it will erupt again within the year.

a. inactive
b. slack
c. elevated
d. attentive

Explanation:

1. "humid" implies a high - moisture content in the air, similar to "damp".
2. A "sphere" is a three - dimensional round object, like a "globe".
3. When raw sewage seeps into water, it needs to be made clean or "purified".
4. "edify" means to instruct or improve morally, similar to "instruct".
5. "dormant" for a volcano means inactive for a period.

Answer:

1. b. damp
2. b. globe
3. d. purify
4. c. instruct
5. a. inactive