There are thirty pupils in our class. _____ of them are young pioneersA. Any B. Either C. All
＋＋＝________A．seven B．eight
－－＝________A．three B．two
＋＝________A．eleven B．ten
＋＝________A．four B．six
×4＝________A．six B．eight
＋
＋
＝________
－
－
＝________
＋
＝________
＋
＝________
×4＝________
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