Wash your hands before meals, ______ you may get ill.
句意：饭前洗手，否则你可能会生病的。
本题考查连词。and而且，but但是，or否则，so所以。结合句意，“饭前不洗手”是“你可能会生病”的条件，故选C。
Wash your hands before meals, ______ you may get ill.
—Who went to the graduation party last night, Mary?
—Almost everyone did. ______ lots of students _____ Ms. Wang appeared at the party.
Restaurants must stop offering free plastic bags in Beijing _______ customers ask for them.
—Tim, our foreign teacher Ms. Green will go back to England next week.
—Really? Let's have a party to say goodbye to her ______ she is free this weekend.
______ you keep moving, you'll never reach the top of the mountain.
—Do you know the traffic rules?
—Sure, one of them is that we can’t go across the street _____ the light is green.
I waited ______ they finished talking.
Get up early, ______ you will miss your train.
Nobody can hear you ______you speak in a louder voice.
—I think I am the shyest in my class. What should I do?
—Be more active in class, ________ you can improve your ability to express yourself.
