Найти все сказуемые и дать их анализ (время и залог) 3. the deep tunnelling came later, in 1890. tunnelling a tube through miles of clay, and sometimes sand and gravel is no easy task, and it was james henry greathead who developed the method which was to make most of london's tube tunnels possible. london transport's experience with tunnels brought them another record. one of the longest continuous railway tunnels in the world is the 17 1/2 mile tunnel on the northern line. 4. there are numerous escalators which help to keep the traffic moving. the first was installed in 1911. one of them at leicester square is over 80 feet in length. on long escalators the speed is changeable. hie "up" escalator runs at full speed when carrying passengers, but when empty it runs at half speed. many of the new escalators have automatic control making a more frequent service throughout the possible.

3. the deep tunnelling came(past indefinite active  )  later, in 1890. tunnelling a tube through miles of clay, and sometimes sand and gravel is  ( present form of "to be" active)no easy task, and it was  ( past indefinite active  ) james henry greathead who developed ( past indefinite active  )the method which was  ( past indefinite active  )to make most of london's tube tunnels possible. london transport's experience with tunnels brought (past indefinite active  )them another record. one of the longest continuous railway tunnels in the world is(present tense  of" to be  " active  ) the 17 1/2 mile tunnel on the northern line. 4. there are  ( present tense of" to be  " active)numerous escalators which help  ( present indefinite active  )to keep the traffic moving. the first was installed  ( past indefinite passive  )in 1911. one of them at leicester square is( present tense  of" to be  " active  ) over 80 feet in length. on long escalators the speed is( present tense  of" to be  " active  )   changeable. hie "up" escalator runs ( present indefinite active )at full speed when carrying passengers, but when empty it runs ( present indefinite active )at half speed. many of the new escalators have( present indefinite active ) )  automatic control making a more frequent service throughout the possible.

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