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TOEFL - Error recognition Test 2

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

1. Before television became so popular, Americans used to entertain each other in the evening by playing games, saying stories, and singing songs.

A. so popular
B. to entertain
C. each other
D. saying

2. The professor had already given the homework assignment when he had remembered that Monday was a holiday.

A. the homework assignment
B. had remembered
C. Monday
D. was

3. Akuce Ganuktibm, she spent her life working with the health and welfare of the families of workers.

A. she
B. her life
C. welfare
D. the

4. It is extremely important for an engineer to know to use a computer.

A. It is
B. extremely
C. for
D. to know

5. The master of ceremonies announced in a loud and clear voice and told that the dinner would be late due to unforseen circumstances.

A. of ceremonies
B. and told
C. would be
D. due to