I ______ my homework., have finished, have been finish, Which sentence is Present Perfect Continuous?, She has visited Oman, They have been studying all morning, The train is fast. ______, it is environmentally friendly., Moreover, Because, Which conjunction shows a reason?, therefore, because, The train is fast. ______ is also comfortable., It, They, He, she, Which word means heavy traffic?, biofuel, congestion, freight, simulator, Firstly, the rail project creates jobs. ______, it reduces traffic congestion, Because, Furthermore, Although, Instead, Which job gives instructions to pilots?, Mechanic, Airport manager, Air traffic controller, Security officer, What does biofuel mean?, Fuel made from rocks, Water fuel, Gas only, Fuel made from plants or living materials

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