Millions of people watched that first moon landing on television, their hearts in their mouths, aware of how difficult and dangerous an adventure it was, and what risks had to be ____. 
#97093
A
taken
B
take
C
to take
D
taking
推荐题目
 ______________ in a white dress, the girl looks very pretty
#96736
A
Dressed
B
Dressing
C
To dress
D
Having dressed
The girl looked at me with a _______expression. Maybe the problem was quite ______.
#95397
A
puzzled; puzzling
B
puzzling; puzzled
C
puzzled; puzzled
D
puzzling; puzzling