A. Stand up
B. Standing up
C. Sit down
D. Sitting down
A. being
B. be
C. been
D. All are correct.
A. talk
B. do talk
C. Both A and B are correct
D. None are correct
A. open
B. opening
C. close
D. closing
A. Take/keep
B. Taking/keep
C. Take/keeping
D. Taking/keeping
A. raising
B. raised
C. raise
D. put down
A. Travel
B. Do travel
C. Don't travel
D. Travelling
A. Don’t worry
B. Worrying
C. Worry
D. Don’t worrying
A. Smoke
B. Smoked
C. Do smoke
D. Don't smoke
A. Turn on
B. Turn off
C. Turn up
D. Turn down
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