11. This bird’s large wings ________ it to fly very fast.

A) make B) cause C) enable D) ensure

12. In most of the United States, the morning newspaper is ________ by school-age children.

A) directed B) discharged C) derived D) delivered

13. Though the long-term ________ cannot be predicted, the project has been approved by the committee.

A) effect B) effort C) affect D) afford

14. Jane was fairly good at English, but in mathematics she could not ________ the rest of the students in her class.

A) put up with B) do away with C) keep up with D) run away with

15. He went ahead ________ all warnings about the danger of his mission.

A) in case of B) because of C) prior to D) regardless of

11-15 BAACD