Helen is 15 years old, and Joan is 15, too. So Helen is ____ Joan.A. so old as B. as older as C. as old as
If H2 burn in O2, we can get _____.
I’d like some _______ and _______.
—Oh, Mary is not here these days. Is she ill? —Her mother told me that she was in hospital.
----What will we do if we want to develop our village ? ---- A lot of roads ______. I think .
We____here two hours ago . So we___ _here for two hours .