You’d better_______ your teacher for help when you meet with problems.
A. to ask
B. asking
C. ask
D. asked
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The cake_______ very delicious.
A. sounds
B. tastes
C. feels
D. touches
Tom was too shy _______ give a speech in public.
A. in
B. on
C. under
D. to
Look at the clock! It's time_______work.
A. started
B. to start
C. starting
D. start
The old man has two daughters. _______ are doctors.
A. Both of whom
Both of which
C. Both of them
D. All of them
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