Directions: In the following passage, some words have been deleted. Select the most appropriate option to fill in each blank.

Many were caught off guard by the number of newly constructed buildings that ___(1)___ in the earthquakes. After the devastation of the 1999 Marmara earthquake, new building codes were passed to make buildings more ___(2)___ to earthquakes. The quality of the concrete is often a source of collapse, especially in older buildings, but in some cases the engineering and design of newer high rise buildings, and ___(3)___ placement of support columns and beams, may have contributed to collapse. The building codes, last updated in 2018, have requirements for engineering design and construction quality as well as material quality. There have long been complaints that the building codes are ___(4)___ enforced. Up to 75,000 buildings across the affected earthquake zone in southern Turkey have been given construction amnesties. Turkey's decision to block ___(5)___ to Twitter for about 12 hours from Wednesday afternoon to early Thursday as people scrambled to find loved ones after devastating earthquakes compounded public frustration at the pace of relief efforts. Opposition leaders and social media users ___(6)___ the throttling of the platform, which has helped people share information on arriving aid and the location of those still trapped in rubble after the initial tremor on Monday.