Of all the blue holes in the world, Sansha Yongle Blue Hole in the South China Sea is now ____. It is 300.89 meters deep.( )
A.deeperB.very deep
C.as deep asD.the deepest
We must clean up ________ classroom before going home.
we
us
our
ours
There is ________ bank across from the hospital.
a
an
the
/
—Do you know about rock music?
—________. Ask Robert. He is a fan of rock music.
No idea
No wonder
No way
No problem
—Could you tell me ________?
—It’s about 6,300 kilometres long.
how wide is the Changjiang River
how wide the Changjiang River is
how long is the Changjiang River
how long the Changjiang River is
Before you get off the bus, you should wait ________ it has stopped.
until
but
because
so