—What do you often do ________ classes to relax?—Listen to music or walk around the school.A.overB.throughC.between
He's been collecting stamps _he was eight years old.
-Is your brother running in the park? -No,is swimming in the river.
Shanghai seems likegood place for vacation.
You can't always________ [dɪ'pend]on your parents.
We should protect the__________ [ɪn'vaɪrənmənt].