Write the following sentences in the negative form. Then change them to general, alternative, special (beginning with the question-words given in brackets) and tag questions.

1. They constructed two houses last year. (When? What? How many? Who?) 2. My friends are building their own house now. (What? When? Who? Whose?) 3. He has known him for a long time. (Who? How Long?) 4. The office usually closes at 7 o'clock in the evening. (When? What time? What?) 5. The chief engineer will be visiting the construction site in the suburbs of the town from 2 o'clock till 4 o'clock tomorrow. (Where? When? What time? Who?) 6. They had built a new hospital before I came to that town. (What? When? Who?) 7. The designer was using a computer in the office at 3 o'clock yesterday. (Where? What? When? What time? Who?) 8. My fellow students will have their field training during the vacation. (When? What? Who? Whose?) 9. They will have finished construction by the end of the year. (What? When? Who?) 10. We have been developing this product for two years. (What? How long? Who?)

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38 I Английский язык для студентов строительных специальностей

UNIT 2. GREAT CIVIL ENGINEERS | 39

10. Fill the gaps with the correct form of the verb. Translate the sentences into Russian.

1. The number of people working in building construction

______ (go down). 2. The manufacture of these structures

______ (grow) over several decades. 3.1 am sure they____

(offer) him a new job next week. 4. By the mid-1990s, the

country's production of building materials_____ (double). 5.

Technical requirements in building construction____ (grow)

day to day now. 6. They______ (take up) repairs for various

roads last year. 7. The builder says he_____ (finish) the roof

by next Saturday. 8. They____ (make) products at the lowest

possible cost at that time. 9. Many construction projects usually

______ (suffer) from financial problems. 10. I_____ (work)

at the plant for three yeas when my brother arrived. 11. The
company ' (make) new types of products at this time next

year. 12. When Mr. Brown retires next year, he____ (work)

for this company for 25 years.