Use the information from the text and the Past Perfect to complete the sentences. Use the verbs from the box. come fall suffer die be
1 The tunnel from the mine to the surface was blocked because rocks had fallen into it. 2 There was a crowd of people at the mine who
from all over the country.
3 For 17 days, no one knew if the miners were
alive or in the rock fall. 4 Waiting so long to see their loved ones
very difficult for the families of
the miners.
5 All of the miners
severe
problems with their teeth, and some had problems with their eyes.
1. To get a constant current, you must have its source. 2. A pyrometer is used to measure the temperature of hot metals. 3. Man learned to dissolve atoms in order to receive a large amount of energy. 4. Scientists are trying to solve the problem associated with new phenomena of electricity. 5. Lightning rod-metal device for protecting buildings from lightning. 6. Carrying out experiments with atmospheric electricity was very dangerous at that time. 7. To magnetize an object is to place it in a magnet field.
1 . a) The girl (writing) on the blackboard is our best pupil. b) Everything ( written) here is quite right. It
2. a) The house (surrounded) by tall trees is very beautiful.
b) The wall (surrounding) the house was very high.
3. a) Who is that boy (doing) his homework at that table?
b) The exercises (done) by the pupils were easy.
4. a) The girl (washing) the floor is my sister.
b) The floor (washed) by Helen looked very clean.
5. a) We listened to the girls (singing) Russian folk songs.
b) We listened to the Russian folk songs (sung) by the girls.
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