We were swimming in the lake _______ suddenly the storm started.
My school bag is larger than _________.
---What do you think of your boss?---He always work hard and he is ____________ late for work.
-I think science is more useful than art.-I disagree. I think art is science.
—Do you often at your friends’ home on your way home?—Yes, we do.
I don’t have _________ money at the moment.