21._____by a desire to learn, he was not interested in children’s play and adventure when he was young.
A.Driven |
B.Driving |
C.To drive |
D.To be drive |
20. The flu is believed________by viruses.
A.causing |
B.being caused |
C.to be caused |
D.to cause |
19. They________a lot of suggestions for improving the workers’ living conditions.
A.put out |
B.put forward |
C.put on |
D.put in |
18. After having gone____-far, I didn’t want to turn back.
A.enough |
B.thus |
C.that |
D.Much |
17. One of the mottos for the park makes_____clear that science and business can and must work together to build the future.
A.them |
B.it |
C.us |
D.This |
15. It is often said that the joy of travelling is________in arriving at your destination___in
the journey itself.
A.\; but |
B.\; or |
C.not; or |
D.not; but |