Who’s your Chinese teacher–Miss Zhang. She has taught______ Chinese for two years.

Studies indicate that people are more _______ to suffer from back problems if they sit before computer screens for long hours.

hese doctors and nurses tired, Mr. Smith —Yes. ________. They have been operating on thepatient for at least 10 hours.

Only when I left my parents for Italy, ________how much I loved them.

下列句中“所以”的用法与其他三项不相同的一项是（ ）