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TOEFL - Error recognition Test 9

Each question has one grammar mistake. Choose the underlined portion that has the mistake.
Questions 1 - 5 of 20

1. The Greek historian Herodotus reported that one hundred thousand men are employed for twenty years to build the Great Pyramid at Gizeh.

A. are
B. for
C. to build
D. at Gizeh

2. The patient who was not supposed to be released until the end of the week was told to dress in clothes and report to the nurses'station.

A. was not supposed
B. until
C. in clothes
D. the nurses'station

3. The corals can be divided into three groups, two of which is extinct.

A. can be divided
B. groups
C. of which
D. is

4. The leader emphasized the need for justice and equality between his people.

A. the need
B. for justice
C. between
D. people

5. Industrialist Henry Ford introduced assembly-line techniques into the manufacturer of motor vehicles.

A. Industrialist
B. introduced
C. manufacturer
D. vehicles