The cat ______ before it _____ out for the night.
A.will be fed – puts
B.must be fed – is put
C.should feed – is put
D.is fed – has been put

Pick out the word whose stress pattern is different
(22)
A.diversity
B.opportunity
C.reservation
D.revolutionary

Pick out the word whose stress pattern is different
(23)
A.mosaic
B.amphibian
C.strategy
D.cooperative

Pick out the word whose stress pattern is different
(25)
A.poison
B.mammal
C.certain
D.research

Choose the best answer to fill in each blank:
Robots are amazing machines (I)______ can be programmed to copy people’s basic actions and movements. They can do (II)_______ any kind of work. Robots have cost some people their jobs, (III)_______ there are advantages to using them.
After World War II George Devol invented a device that could (IV)________ a machine to do the same task repeatedly. Devol designed the first programmable robot in 1954 and started his company Universal Automation. In 1961, robots were used (V)_____ together cars, and not long afterwards , robots were used in automobile factories around the world.
(I)
A.which
B.whose
C.who
D.they

Choose the best answer to fill in each blank:
Robots are amazing machines (I)______ can be programmed to copy people’s basic actions and movements. They can do (II)_______ any kind of work. Robots have cost some people their jobs, (III)_______ there are advantages to using them.
After World War II George Devol invented a device that could (IV)________ a machine to do the same task repeatedly. Devol designed the first programmable robot in 1954 and started his company Universal Automation. In 1961, robots were used (V)_____ together cars, and not long afterwards , robots were used in automobile factories around the world.
(III)
A.but
B.while
C.as
D.because

If you knew the truth, you ______ completely surprised.
A.will be
B.are
C.would be
D.would have been

Many people get sick after ______ the fish ______ in the polluted waters.
A.having been eaten – being caught
B.eating – caught
C.they eat – catching
D.having eaten- are caught

I _______ him before we were put in one group in the workshop.
A.had never met
B.was never meeting
C.has never met
D.never meets

I took the shot and ________ a photograph came out of the camera
A.remarkably
B.steadily
C.instantly
D.Shortly