1. Since the earth’s crust is much thicker under the continents, equipment would have to be capable of drilling through 100,000 feet of rock to investigate the mantle ________ . (A) beneath them(B) beneath their(C) beneath its(D) beneath they2. Drivers should look very carefully ________ onto the main street. (A) when turning(B) they turn(C) turn(D) [...]

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1. When Henry arrived home after a hard day at work, ________. (A) his wife was sleeping(B) his wife slept(C) his wife has slept(D) his wife has been sleeping2. Kitchen appliances called blenders became ________ in the 1930s, when Stephen J. Poplawski developed a machine that excelled at making his favorite drink. (A) establish(B) establishing(C) [...]

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1. Pioneer men and women endured terrible hardships, and ________ (A) so do their children(B) neither did the children(C) also the childs(D) so did their children2. The rains of 1993 ________ the Missouri river to overflow resulted in one of the worst floods of this century. (A) the cause of(B) causing(C) they caused(D) caused3. The [...]

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1. ________ a teacher in New England, Webster wrote the ‘Dictionary of the American Language’. (A) It was while(B) When(C) When was(D) While2. About 20 miles from Boston, ________ a little town named Concord that has a rich history. (A) has(B) there is(C) there are(D) where is3. ________ the promotion of health and to helping [...]

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1. Lee contributed fifty dollars, but he wishes he could contribute ________. (A) one other fifty dollars(B) the same amount also(C) another fifty(D) more fifty dollars2. It is gravity ________ objects toward the earth. (A) pulling(B) that pulls(C) to pull(D) what pulls3. Using a globe can be ________ it is educa-tional. (A) enjoyable(B) to enjoy [...]

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