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You should _______________ to one or more weekly magazines such as Time or Newsweek.

You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.

— ___________________

— Once or twice a week.

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

By no means ______ destroy or create energy.
Ask Mr. Brown, or any other person ______.
Whether we will go or not __________ the weather.
Which ________ do you prefer, coffee or orange juice?
若要求放大电路输入电阻高,且稳定输出电压,在放大电路中应引入的负反馈组态为_______。
Tables______ of stones or wood.
可以放大电压,但不能放大电流的是_________组态放大电路。
在放大电路的输入量保持不变的情况下,若引入反馈后_________,则说明引入的反馈是负反馈。
在反馈放大电路中,如果反馈信号和输出电流成正比,称为_________反馈。
在放大电路中,为了稳定静态工作点,可以引入_________。
为了稳定放大电路的输出电流,应引入_________负反馈。
一个单管共射放大电路如果通过电阻引入负反馈,则_________。
既能放大电压,也能放大电流的是_________组态放大电路。
Without water, _________ no plants or animals.
I am wondering if they are ____ or____.
_________ in a person’s speech or writing usually ranges on a continuum from casual or colloquial to formal or polite according to the type of communicative situation.
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