M、N两种商品必须组合在一起才能满足消费者的同一需求，若M商品的成本提高，在其他条件不变的情况下，下列图中表达的变动关系正确的是
—Could you please tell me ________?
—In my hometown.
how you usually go to school
where you usually spend your holiday
when you usually have breakfast at school
Listen! The birds ________ in the tree now.
sing
sang
are singing
—Dad, let’s ________ early to do exercise tomorrow morning.
—OK, no problem.
look up
get up
give up
—What do you think of the chicken soup, Helen?
—It ________ really good. I’d like to drink more.
tastes
feels
sounds
You should ________ your car slowly when passing by a school.
drive
clean
repair
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