Youwillfallbehind others     youwork hard.
#57333
A
if
B
unless
C
though
D
since
推荐题目
----_______is your sister?     ---She is thirteen years old. 
#56258
A
How many
B
How old
C
How much
D
How long
 ----Who did it better, Bill or Henry?----I think Bill did just ______ Henry.
#56162
A
as well as
B
as good as
C
as better as
D
more badly than
___________ the young girl ___________ her parents take regular exercise in order to keep fit. 
#56037
A
Not ... but
B
Either ... or
C
Neither ... nor
D
Not only ... but also
My parents are ______ famous writers.
#58319
A
all
B
many
C
both
D
most