Trust is needed in the whole society, which requires parents to obey their own rules and set a good example _______ children can trust them.
Returning from Guilin, he told me about the scenery ________ interested him there.
________ by a college or university in the USA Chinese students must have excellent speaking and writing abilities in English.
It was on Tuesday evening ______ I finished the experiment.
Stand over there ______ you will get a better view of the whole city.
Noticing a boy fall off his bicycle Mike ran over ______ if he was hurt.