I can't go to the park with you. ________, I don't want to go, ________ I don't have enough money.
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!
The robber can’t escape _______ this time. We have got much evidence to prove his crime.
______ is believed that morning exercise is one of the best ways for a person to keep fit.