After dry days, everyone appreciates ______ when there is a timely rain．
A．that B．one C．this D．it
—What about the picnic plan?
—Not ________ yet．It’s being discussed..
A．decided B．decide C．deciding D．to be decided
Look at the new computers, of ______ none are produced abroad.
A．them B．whom C．which D．these
Theory is based on practice and ________ serves practice．
A．in turn B．by and by C．by chance D．in this case
— How many of them do you want to act in the play?
—_______ , and still a large number needed!
A．All B．Both C．Neither D．None
Since no other way to escape from the flood, ____ only safe thing is to take ____chance.
A．an ; 不填 B．the ; a C．an; a D．不填；the
