Our English teacher is nice and patient she is very strict with us.
句意：尽管我们的英语老师对我们很严格，但是她很好也很有耐心。
考查连词辨析。if如果；as由于；unless除非；though尽管。根据句意，前文Our English teacher is nice and patient“我们的英语老师很好也很有耐心”，后文she is very strict with us“她对我们很严格”，可知，后文表让步关系，尽管她很严格，但是她很好也很有耐心，所以空格处填though。故选D。
Our English teacher is nice and patient she is very strict with us.
Even if we learn something well, we will forget it ______ we use it.
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.
