“Not having returned home yet, _________”, his father said to the police.
#63543
A
his mother got worried
B
his mother must be worried
C
I think he is missing
D
he must have got into some trouble.
推荐题目
The welldressed lady was caught stealing in the fashion shop. Strangely enough，she ________have done such a thing.
#63385
A
would
B
must
C
should
D
might
The public transportation is very convenient in that big city , so there______be any difficulty in traveling around .
#63333
A
mustn’t
B
wouldn’t
C
shouldn’t
D
needn’t
Mountain climbing ______ be really dangerous at times even though it is challenging and exciting in general.
#62524
A
can
B
should
C
shall
D
must