As we all know．____life is hard for any of us. If we live___ happy life，we must all work harder.
#10447
A
／：／
B
／；a
C
a；／
D
a；a
推荐题目
Mary used to take _______ advantage of the lunch hour to have _______ short sleep in her office.
#8562
A
/; the
B
the; the
C
the; a
D
/; a
Some animals in _____ wild are now in ______ great danger of disappearing because of human activities.
#9236
A
the, /
B
a, a
C
the, the
D
/, the
It will bring you into _____magical world and make your dream come true if you are traveling through _____space.
#8201
A
a; the
B
/ ; /
C
a; /
D
the; /
Only through _______ talks can we build trust and only through cooperation can we create _______ win-win economic situation.
#8982
A
/, a
B
the, the
C
/, the
D
the, a