Their factory has developed a kind of ___ to help people walk.
A: machine
B: machines
C: a machine
D: the machine
A: machine
B: machines
C: a machine
D: the machine
举一反三
- Their factory has developed a kind of ______to help people walk. A: [A] the machine B: machines C: machine
- The factory has produced a new kind of ____. A: machine B: machines C: a machine D: the machine
- Every one of us has ____ machine; _____ machine is _____ brain. A: a… the… the B: a… a… a C: a… a… the D: the… a… a
- This washing machine factory has introduced a ______ technological innovation making the job of housewives easier.
- Which machine are the people talking about? （） A: A fax machine B: A printer C: A photocopier