Choose the right variant (a, b, c or d)
1. Evidence for this hypothesis for two decades.
a) have been accumulated c) are being accumulated
b) is accumulating d) has been accumulated
2. They are sure that the funds by the end of the month.
a) will be receiving c) will have been received
b) will have received d) will have been receiving
3. Now new applications of the theory in many fields.
a) is explored c) has been explored
b) are being explored d) are exploring
4. He to advance strong arguments for the use of his own method.
a) has c) must
b) are d) needn't
5. Universal agreement concerning the problem yet to be reached.
a) is c) can
b) need d) have
6. They may their experiments long ago.
a) stop c) had stopped
b) have stopped d) stopped
7. I heard somebody my name.
a) mentioned c) mention
b) to mention d) mentions
8. They didn't want their plan
a) failed c) failing
b) fail d) to fail
9. Science is knowledge in an orderly manner.
a) arranging c) to arrange
b) arranged d) being arranged
10. In any technical achievement thing always lies ahead.
a) best interesting c) the most interesting
b) much interesting d) many interesting
11. We hoped that our paper a contribution to this debate.
a) would be c) being
b) were d) to be
12. If the test data available, the calculations of the parameters will be made from them.
a) is c) was
b) will be d) are
13. Provided they these new methods, they would apply them in their investigations.
a) had considered c) would have considered
b) would consider d) considered
14. The experiment a failure if we hadn't taken the necessary measures in time.
a) might be c) had to be
b) might have been d) had been
15. his research with his colleagues he saw some of its weak points.
a) Having discussed c) Having been discussed
b) Being discussed d) Discussed
16. If economically, the supplies could last for a month.
a) using c) to use
b) used d) having used
17. such processes is essential for a comprehensive programme of research.
a) To be described c) Being described
b) Describing d) Described
18. When opinions with other people, you enrich your mind.
a) being exchanged c) exchanging
b) exchanged d) having exchanged
19. between these two approaches, we need to have some further information.
a) Chosen c) To choose
b) Having been chosen d) Being chosen
20. For this possibility ..., it is necessary to work much harder.
a) to realize c) being realized
b) realizing d) to be realized