Choose the right variant (a, b, c or d)
1. Since the 17th century economists … methods for studying the use of economic resources.
a) has developed c) are developing
b) have been developing d) have been developed
2. They …to have started the project a month ago.
a) might c) were
b) must d) should
3. The data … outweighed those that we had had before.
a) obtained c) to obtain
b) obtaining d) to be obtained
4. They suggest that such results … very carefully considered.
a) should be c) must be
b) to be d) would be
5. We had our plan … by the board yesterday.
a) approving c) to be approved
b) to approve d) approved
6. During tomorrow’s demonstration … will be an interval of fifteen minutes.
a) it c) there
b) – d) here
7. This computer is so simple that it … be operated by anyone.
a) can c) need
b) is able to d) ought
8. There were two small rooms in the building, … served as a study.
a) the smaller of that c) the smallest of that
b) the smaller of which d) the smallest of them
9. The experiments show agreement with the theory … the conditions are met.
a) unless c) so that
b) in case d) provided
10. The field tests were postponed … unfavorable weather conditions.
a) because of c) because
b) according to d) since
11. It is possible for computers … all types of information.
a) that they handle c) to handle
b) handling d) when handling
12. … any further details, we will inform you immediately.
a) If we found out c) Should we have found out
b) Should we find out d) Had we found out
13. He has not been able to recall when and where … that model.
a) he saw c) does he see
b) did he see d) he has seen
14. I am looking forward to … with good news.
a) when you return c) your returning
b) when you will return d) return you
15. … one of our European representatives.
a) Don’t miss to contact c) Miss not to contact
b) Let contact d) Don’t let contact
16. We must admit that the old method … some difficulties.
a) causing c) cause
b) does cause d) to cause
17. France has not taken any decision yet, and … .
a) neither has some of the other countries c) several other countries hasn’t either
b) some other countries also haven’t d) neither have several other countries
18. Having been asked to speak at the symposium, … .
a) some notes were prepared for Dr Knapp c) some notes were prepared by Dr Knapp
b) Dr Knapp prepared some notes d) the participants were pleased to hear Dr Knapp
19. Only the first choice was hard to make, … .
a) no trouble causing by the rest of the choices c) no trouble to cause by the rest of the choices
b) the rest of the choices to be caused no trouble d) the rest of the choices causing no trouble
20. The question remains … .
a) this hypothesis may prove to be valid c) whether this approach is applicable in all cases
b) as soon as the drawing are received d) that no serious error has affected the measurements