A. "Whoever wants to follow a slimming course [a diet] should stay in the 'Secret Annexe'!"
B. "We've just had a third air raid; I clenched my teeth together to make myself feel courageous."
C. "I must tell you that I am really trying to be helpful, friendly, and good . . . ."
D. "At mealtimes, no one dares to open their mouths . . . because whatever is said you either annoy someone or it is misunderstood."