The door is open but nobody is in. Mary______have forgotten to lock the door.
| A．should | B．must | C．would | D．could |
— I phoned you at about three this afternoon, but no one answered.
— Oh, that was probably _______ I was doing exercise outdoors.
| A．when | B．why | C．what | D．that |
Everyone knows that ______ paper was invented by _______ Chinese.
| A．/; the | B．the; a | C．a; / | D．a; a |
You ought to write a”T”true in front of the statement．Each mistake that you make you’ll lose one point．
| A．with：In | B．for：For | C．by；With | D．on；By |
It is the way he talks with his motheris different fromwe were used to．
| A．that：that | B．which；what | C．that；which | D．in which;where |
The girl is seriously ill，otherwise sheworking instead of staying in bed all day long．
| A．is still | B．will still be | C．would still be | D．was still |