______he was badly ill, _____ he didn’t stop his work.A.Because…/ B. Although…but C. Although…/
I like the TV program________Animal World.
You should keep________math and shouldn’t give up________it.
What could Yu Gong do instead of________the mountains?
She says the best way________English words is by memorizing the words of pop songs.
Unless it________tomorrow,we________hiking in the mountain.