______ it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal.
| A．When | B．As | C．While | D．Before |
Generally speaking, when___ according to the directions, the medicine has no side effect.
| A．taken | B．taking | C．to take | D．to be taken |
_______ in her skirt, the little girl tried to make herself ________ at the party.
| A．Dressed; notice | B．Dressing; noticed | C．Dressed; noticed | D．Dressing; noticing |
Though ________ money, his parents managed to send him to school.
A. lacked B lacking of C. lack ofD. lacking
from the moon, our earth, with water seven percent of its surface, appears as a “blue ball”.
| A．Seeing…covered | B．Seen…covered | C．Seeing…covering | D．Seen…covering |
Nuclear energy may be dangerous if
| A．controls | B．not controlling | C．not controlled | D．controlled |