As Susan stared at ______ piles of plastic in her recycling bin, ______ strong sense of responsibility made her stick to her recycling work．
| A．不填；不填 | B．不填; a | C．the ; a | D．the; the |
Nowadays some protective parents want totheir kids from every kind of danger, real or imagined.
| A．spot | B．dismiss | C．shelter | D．distinguish |
to sunlight for too much time will do harm to one’s skin.
| A．Being exposed | B．Exposed |
| C．Having exposed | D．After being exposed |
They appearedme, so I had to explain to them.
| A．misunderstanding | B．misunderstood |
| C．to be misunderstood | D．to have misunderstood |
If China’s space technology has achievedbreakthrough in this field, it really is
amazing wonder.
| A．the; an | B．a; an | C．不填; the | D．a; 不填 |
All passengers ____, please fasten your seat belts and remain seated ____the plane is landing．
| A．on board; until | B．abroad; since | C．on the board; before | D．aboard; when |