If it was not an accident, he must have done it .
| A．on purpose | B．in common | C．on occasion | D．in time |
Because prices of food and clothing and almost everything else in that country have steadily gone up, the buying of the dollar has gone down.
| A．energy | B．force | C．power | D．strength |
——What’ s the matter?
—— The shoes don’ t fit properly.They＿＿＿＿my feet.
| A．are hurting | B．will hurt |
| C．have hurt | D．are hurt |
In this experiment, they are woken up several times during the night, and asked to report what they＿＿＿＿.
| A．had just been dreaming | B．are just dreaming |
| C．have just been dreaming | D．had just dreamt |
.When he was alive, the old scientist used to say that knowledge ＿＿＿＿from practice and he gained his experience by doing a lot of practical work.
| A．was coming | B．had come |
| C．comes | D．would come |