It’s their duty for the soldiers          our country          our enemies.
#93133
A
to prevent; from
B
to keep; from
C
to protect; from
D
to defend; with
推荐题目
 _____ in the dark, his head hit against a tree.
#96805
A
Walking
B
He was walking
C
Walked
D
When he was walking
The bell _______ the end of the period rang, _______ our heated discussion.
#92093
A
indicating; interrupting
B
indicated; interrupting
C
indicating; interrupted
D
indicated; interrupted
He gave a ________smile. 
#97353
A
satisfying
B
satisfied
C
satisfaction
D
satisfactory