from the moon, our earth, with water seven percent of its surface, appears as a “blue ball”.
#94117
A
Seeing…covered
B
Seen…covered
C
Seeing…covering
D
Seen…covering
推荐题目
Distinguished guests and friends, welcome to our school, the ceremony of the 50th Anniversary this morning are our alumni （校友） from home and abroad.
#98971
A
Attend
B
To attend
C
Attending
D
Having attended
in a white uniform, he looks more like a cook than a doctor.
#94329
A
Dressed
B
to dress
C
Dressing
D
Having dressed
_______to improve the students’sight, the eye exercises are done in schools nationwide.
#94304
A
Being designed
B
To design
C
Designing
D
Designed