Отыскать все сказуемые и дать их анализ (время и залог) 3.

Отыскать 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 London39;s tube tunnels possible. London transport39;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 quot;upquot; 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.