It is required that under no circumstances ______ betray ourselves even if there are temptations like money or beauty.
#63636
A
we will
B
should we
C
we
D
we shall
推荐题目
This book _____ Lucy’s. Look! Her name is on the book. 
#76581
A
must be
B
may be
C
can’t be
D
mustn’t be
You _________ get up so early. It’s weekend today.
#75626
A
mustn’t
B
can’t
C
needn’t
D
oughtn’t