The number 5.12 is a special number,__ ,I think, that will be remembered by Chinese people forever.
| A．what | B．it | C．which | D．one |
Wait till you are more ________. It’s better to be sure than sorry.
| A．alternative | B．satisfied | C．optimistic | D．certain |
The hotel ____ 50 yuan for a room for the night.
| A．offered | B．charged | C．paid | D．gave |
You can take as many books as you like here for they are free of ________.
| A．fare | B．charge | C．money | D．pay |
The army officer ___ his men to fire as soon as the enemies came up.
| A．requested | B．commanded | C．begged | D．suggested |
He made a living ___ teaching.
| A．with | B．by | C．to | D．over |