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
________ the right decisions ________ the future is probably the most important things we'll ever do in our lives.
#88278
A
Making;concerned
B
Made;concerning
C
To make;concerned
D
Making;concerning
It’s reported that some wild animals were found      in a big cave in the mountain.
#93700
A
to hide dead
B
hidden dead
C
hiding dead
D
hidden death
_____all kinds of knowledge ,he was admitted to a key university.
#98174
A
Equipped with
B
Having equipped for
C
Armed for
D
Having armed with