(E) A grain is a single, tiny piece of sand; one normally finds thousands or millions of grains of sand together (as at the beach). Similarly, a drop is a single, tiny bit of water, and one normally finds millions of drops of water together (as in a stream or lake).
GRAIN: a small, hard seed or seedlike fruit, esp. that of any cereal plant, as wheat, rice, corn, rye, etc
aviary: a large cage or building for keeping many birds
cutlery: knives, spoons, and other implements used in preparing and eating food

(E) A plumber can often be found installing, fixing, or working with pipes in a house; an electrician can often be found doing the same kinds of things with the ring in house.
Tools: any implement, instrument, or utensil held in the hand and used for cutting, hitting, digging rubbing, etc.: knives, saws, hammers, shovels, rakes, etc. are tools
Gardener: a person who likes or is skilled at working in a garden
Wiring: the action of a person or thing that wires

(B) A whirlpool is a violent, rapidly rotating spiral of water; which can seize or drag anything in its path (a ship, for instance). A tornado is a similarly violent and powerful rotating column of air, which can be equally dangerous.
Explosion: an exploding; esp., a blowing up, or bursting with a loud noise; detonation
Tornado: a violently whirling column of air, with wind speeds of c. 160 to 480 km/hr. (c. 100 to 300 mi./hr.), extending downward from a cumulonimbus cloud, esp. in Australia and the central U.S.: almost always seen as a rapidly rotating, slender, funnel-shaped cloud that usually destroys everything along its narrow path
Hurricane: anything like a hurricane in force and speed
Vortex: a whirling mass of water forming a vacuum at its center, into which anything caught in the motion is drawn; whirlpool
Orbit: the bony cavity containing the eye; eye socket
Satellite: a) a follower or attendant attached to a prince or other person of importance b) any obsequious or fawning follower or dependent.

(B) A bird builds and lives in a nest; a beaver builds and lives in a lodge. (The other answer choices refer to places where animals may live, but none of those creatures build the homes mentioned.)
Salmon: river in central Ida., flowing into the Snake River: 420 mi. (676 km)
Lake: Simon 1866-1945; U.S. engineer & naval architect
Beaver: a man‘s high silk hat, originally made of this fur
Lodge: Henry Cabot 1850-1924; U.S. senator (1893- 1924)
Canary: a small, yellow finch (Serinus canaria) native to the Canary Islands, Madeira, and the Azores
Raccoon: any of a genus (Procyon, family Procyonidae) of small, tree-climbing, American carnivores, active largely at night and characterized by long, yellowish- gray fur, black, masklike markings across the eyes, and a long, black-ringed tail

(C) The purpose of a filter is to purify what flows through it, which may be air, water, or some other substance. Similarly, the purpose of a sieve is to sift what flows through it, which may be flour, sand, or some other granular substance.
FILTER: a device for separating solid particles, impurities, etc. from a liquid or gas by passing it through a porous substance
Drain: to draw water or any liquid from gradually so as to dry or empty !to drain swamps"
Sieve: a utensil having many small meshed or perforated openings, used to strain solids from liquids, to separate fine particles of loose matter from coarser ones, etc.; sifter; strainer
Pulverize: to crush, grind, etc. into a powder or dust