16. Putting in a new window will ________ cutting away part of the roof.

A) include B) involve C) contain D) comprise

17. In the _____ of the project not being a success， the investors stand to lose up to $30 million.

A) face B) time C) event D) course

18. The British constitution is ________ a large extent a product of the historical events described above.

A) within B) to C) by D) at

19. I suggested he should ________ himself to his new conditions.

A) adapt B) adopt C) regulate D) suit

20. Cancellation of the flight ________ many passengers to spend the night at the airport.

A) resulted B) obliged C) demanded D) recommended

16-20 BCBAB