Read the passage and fill in the gaps (56-60):
The Dhaka Metro Mass Rapid Transit (MRT) is a new metro rail system being developed by the Dhaka Mass Transit Company (DMTC) in Dhaka, Bangladesh. It is expected that the commercial operation of metro rail in Dhaka will begin by the (56). The original implementation period of the project was scheduled for 2012-2014. Each train under metro rail project has __(57)___ that can carry a maximum of 2,308 people at a time. They were manufactured by Kawasaki Heavy Industries Ltd in _(58)___, according to project officials. Mass Rapid Transit (MRT) Line-6, the country's first metro rail system, is being built at a cost of TK 21,985 crore. Once complete, the metro rail with ___(59)___ stations will be able to carry __(60)____ people an hour, reducing travel time from Uttara to Motijheel to around 30 minutes, from about two hours by common transports on regular days.
56 ?