—The similarities between social networks are striking.—That ________ come as no surprise,because they are all products of the Internet. 
#62485
A
should
B
shall
C
may
D
must
推荐题目
Jim has a _____. He is going to the USA to visit his sister.
#77041
A
two-months holiday
B
two months’ holidays
C
two-month holiday
D
two months holiday
You ________ in person; a telephone would have been enough.
#62344
A
couldn't have come
B
needn't have come
C
shouldn't have come
D
mustn't have come
If you don't know the word, you can _____ in the dictionary. 
#75135
A
look it after
B
look at it
C
look for it
D
look it up