Delta, the American airline, is sometimes jokingly explained “Don’t expect your luggage to arrive” because it ______ be very slow.
#63051
A
should
B
must
C
can
D
will
推荐题目
I will come _____ I don’t change my mind. 
#75176
A
unless
B
if
C
because
D
though
—Must I water the flowers now?  —No, you ________ . You __________ do it later.
#74201
A
mustn’t, must
B
mustn’t, may
C
needn’t, may
D
needn’t, must
The weather in Liupanshui is ________ too cold _______ too hot.
#75054
A
neither; nor
B
either; or
C
not only; but also
D
both; and