The teacher's efforts ______ when one of his students was admitted to Beijing University.
| A．paid back | B．paid off | C．paid for | D．paid out |
( ) 27. Take _______ half, they’re exactly the same.
| A．either | B．any | C．both | D．Neither |
( ) 26. I have been studying computer for several years and I still __________.
| A．have | B．do | C．have been | D．Am |
( ) 25. This book is said to be a special one , which _______ many events not found in other history books.
| A．writes | B．covers | C．prints | D．Reads |
( ) 24. Electricity _________ us with light, heat and power.
| A．makes | B．gives | C．provides | D．Send |
( ) 23. More and more people are signing up for Yoga classes nowadays , _______ advantage of the health and relaxation benefits.
| A．taking | B．taken | C．having taken | D．having been taken |