21．I’m vey busy toady. ______,I have much work to do today .
| A．In other words | B．In a word | C．That to say | D．On a word |
In American there are more households with pets than ____ with children.
| A．those | B．these | C．ones | D．that |
— How is everything going on with you in America.
—Quite well. Not so smoothly as I expected, _______.
| A．Instead | B．too | C．either | D．though |
In the plane crash accident, the chance of the pilots’ survival is ______.
| A．slight | B．slim | C．smooth | D．spare |
You don’t have to worry about the journey because I have made a ______ on the Indian Pacific train to Perth.
| A．reserve | B．book | C．preparation | D．reservation |
In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude.
| A．the; / | B．a; an | C．a; / | D．the; an |