Before television became so popular (A), Americans used to entertain (B) each other (C) in the evening by playing games, saying (D) stories, and singing songs.
A.so popular (A)
B.to entertain (B)
C.each other (C)
D.saying (D)

The native people in the Americas were referred to (A) as Indians because, according to (B) the believe (C) at the time, Christopher Columbus had reached (D) the East Indies.
A.referred to (A)
B.according to (B)
C.believe (C)
D.had reached (D)

To assure (A) the safety of those workers who (B) must handle radioactive material, the employer should not leave (C) them enter (D) contaminated areas without protective clothing.
A.To assure (A)
B.who (B)
C.leave (C)
D.enter (D)

Nuclear powers (A) production in the US is (B) controlled (C) by the (D) Nuclear Regulatory Commission [NRC].
A.powers (A)
B.is (B)
C.controlled (C)
D.the (D)

Because (A) helicopters are capable of hovering (B) in midair, they are particularly (C) useful for rescue missions, military operates (D), and transportation.
A.Because (A)
B.of hovering (B)
C.particularly (C)
D.operates (D)

Choose the underlined part that needs correction.He arrived (A) with (B) a friend whose (C) waited outside (D) in the car.
A.arrived (A)
B.with (B
C.whose (C)
D.outside (D)

Choose the underlined part that needs correction.The man whose (A) she (B) is going to marry (C) is (D) very rich.
A.whose (A)
B.she (B)
C.marry (C)
D.is (D)

Choose the underlined part that needs correction.She will (A) fly to Washington D.C, that (B) is the (C) capital city of (D) America.
A.will (A)
B.that (B)
C.the (C)
D.of (D)

The (A) company is very interested in (B) product (C) design and new innovation (D).
A.The (A)
B.interested in (B)
C.product (C)
D.new innovation (D)

With his speed (A), I think he'll make (B) a record for (C) running before he graduates from (D) high school.
A.speed (A)
B.make (B)
C.for (C)
D.from (D)