Many firms give away small quantities of their productions as _______ so that people can try them before buying.
| A．signs | B．signals | C．examples | D．samples |
A successful life is a life ____ challenges are met and difficulties overcome.
| A．which | B．where | C．what | D．that |
After suffering a heart attack, Michael Jackson was pronounced dead, ____ a tragic end to the world' s most popular entertainer.
| A．to mark | B．marking | C．marked | D．having marked |
The magnificent tower must be saved, ________ the cost!
| A．however | B．whichever | C．whatever | D．wherever |
After supper she would sit down by the fire, sometimes _____ an hour, thinking of her young and happy days.
| A．as soon as | B．as much as | C．as many as | D．as long as |
People were not allowed to enter the reading room because it _______.
| A．had been painted | B．was being painted |
| C．was painting | D．painted |