The sunspot came into its active stage last year, that happens once every eleven years.
#15425
A
one
B
it
C
the one
D
what
推荐题目
It is these poisonous products____ can cause the symptoms of the flu, such as headache and aching muscles.
#16685
A
who
B
that
C
how
D
what
The fire made _____ difficult to rescue the people trapped under the ruins in the earthquake.
#15323
A
/
B
this
C
that
D
it
Is there _________on TV today?
#57976
A
anything else important
B
important anything else
C
something else important
D
important something else