You_______that mistake；you were too careless．
| A．should not make | B．should not have made |
| C．ought not have made | D．must not have made |
The world seven continents and four oceans.
| A．makes up of | B．makes out of |
| C．is consisted of | D．consists of |
form the moon, our earth with water .seventy percent of its surface, appears as a blue ball.
| A．seen, covered | B．seeing, covering |
| C．seen, covering | D．seeing, covered |
The foreign guests, by an interpreter, came out of the hall.
| A．following | B．to follow |
| C．followed | D．to be followed |
Einstein was usually his scientific study that he even forgot to eat.
| A．very absorbing | B．very absorbed in |
| C．so absorbed in | D．such absorbed in |
Tom felt that he himself , rather than the girls, for the failure of the football match.
| A．were to blame | B．was to blame |
| C．were to blamed | D．was to be blamed |