--There so many foreigners in the streets these days.-- They might be runners in the Yellow River Estuary (入海口，河口) International Marathon.
#56365
A
is
B
are
C
have
D
will be
推荐题目
—Tom isn’t feeling very well. —He seems to have a cold the weather changes suddenly.
#55789
A
before
B
so
C
because
D
if
______ we deal with our problems, we can easily become unhappy.
#58561
A
Unless
B
Until
C
Though
D
Whether
You should keep working hard ____ you have passed the exam.
#56116
A
since
B
because
C
so
D
even though
This dress still looks beautiful on her _____ it is last year’s style.
#56876
A
because
B
though
C
if
D
since