Question

They believed that by using computers the production of their factory ________.

1. A.
   will greatly increase
2. B.
   would greatly increase
3. C.
   would be greatly increased
4. D.
   will have been greatly increased

Answer 1

C
increase作"增长"讲，既是及物动词，又是不及物动词。表示自然增长时用不及物动词形式，表示人为增长时用及物动词形式。根据句意及时态可知正确答案为C项。