The ordinary girl sat silently at the corner , but when the prince came over to invite her to dance , her face immediately ____________.
._____ nothing is doing ill.
Our monitor talks about Mars as if he ______ a scientist.
Your floor is dirty. It needs _______.
. ---Here you go. There are______ such cards here. --- I only need ______ these cards in the box.
---Listen! The fire engine is roaring! (消防车吼叫) --- Oh, there ______ be a fire somewhere. How terrible!