—Labor(劳动)education is important for students' development.
—Yes. ________schools put it into practice, students will be more independent and helpful.
句意：——劳动教育对学生的发展很重要。——是的。如果学校把它付诸实践，学生将会更独立和乐于助人。
考查if引导的条件状语从句。While当……时；Unless除非；If如果。分析句子可知，此处表示“如果学校把它付诸实践，学生将会更独立和乐于助人”，强调“如果”，是if引导的条件状语从句。故选C。
—Labor(劳动)education is important for students' development.
—Yes. ________schools put it into practice, students will be more independent and helpful.
I think the coffee beans are from Brazil, ________ I’m not completely sure.
Max got lost and was trapped in the forest for 10 hours _______ a farmer nearby found him.
Our school basketball team will win the next match _________ they practise more.
We’re not very close friends______ we’ve known each other for a long time.
Give me a chance, ________I will give you a wonderful surprise.
Lucy held her head up like a queen______ Bill was telling his tale.
Father is too tired today. Don’t call him ________ it is necessary.
I will volunteer for a two-day home stay for an exchange student from the UK. I consider it a good chance to show Chinese food________our kindness.
—I heard a young fireman lost his life in the big fire.
—What a pity! ________I don't know who he is, I know who he is for. He is our hero forever.
