I have spent every minute I can______mathematics.
A. study
B. studying
C. to study
D. studied
Nowadays in many places of the world water is______short supply.
A. on
B. off
C. up
D. in
Which position is most suitable for a retired person？
A. Part-time Shop Assistant.
B. Teaching Assistant in Hania's Playschool.
C. Weekend Work in Rubberlast Group Ltd.
D. Teaching Assistant in the University of Bristol.
The old man was very ______.
A. clever
B. strange
C. foolish
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