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1ian is staying with a family in italy. a typical c social b contact d host 2 ann had surgery after the accident. a muscle b plastic c special d scar 3 my sister when she is embarrassed. a yawns c blushes b sneezes d coughs 4 sam never her temper. a loses b gives c misses d stays 5 you shouldn’t about other people. a embarrass c irritate b gossip d obsess 6 jeff is a bit . he should go on a diet. a thin c overweight b well-built d middle-aged 7 wendy is always and smiling. a annoying c cheerful b popular d generous 8 you should alert when you’re driving at night. a keep b stay c take d make 9 his heart when he saw the boat leaving. a moved b fell c lost d sank 10 etiquette is rules of behaviour. a social c foreign b culture d family с

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shybite
shybite
4,5(26 оценок)

2Mg+O2=2MgO

MgO+H2O=Mg(OH)2

Mg(OH)2+2HNO3=Mg(NO3)2+2H2O

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