Badly dressed and speaking in a strange way, he must have ______ to the people present to be a silly old man.
| A．appeared | B．pretended | C．shown | D．thought |
We all know the truth there are air, water and sunlight there are living things．
| A．where | B．wherever | C．that | D．that wherever |
＿＿ her hair getting gray, she has decided to have it dyed．
| A．As | B．For | C．With | D．Though |
The invention of artificial hearts marked a turning point in the battle heart disease．
| A．among | B．for | C．against | D．between |
Some people try to knock me down, only me more determined to do better．
| A．to make | B．makes | C．having made | D．made |
She removed hat she was wearing and tried on _____ black silk one．
| A．a; a | B．the; the | C．the; a | D．a; the |