Not until ________ back from the USA ________ for South Africa.

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His attitude towards us is not ________ of a comrade.

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The headmaster of the school forbids ________ during office hours and he even forbids his school staff in public places.

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The politician was deeply hurt when many of his former supporters ________ him.

[　　]

Before leaving a hotel ________.

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Will you please ________ me to speak for myself?

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He never speaks to others unless ________.

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—How did you get to know about that?

—________.

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—Are you satisfied with what she has done?

—Not a little. It couldn't be ________.

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When seeing a man ________ on the ground, Xiao Ming ________ his bike and went over to help.

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