I'dliketoremindyouthatthereisno_____onthepartofsuspectstoanswerquestions.
A、obligationA
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The professor asked a question, and David ________ a good answer.
Idon’tneedanyhelpatthemoment,butI_____youroffer.
Ittookmeamonthtogetrid_______thecough.
When you're_____ a crisis, it often helps to talk to someone.
It is important to ________ your skin from the harmful strong sunlight.
