He worked hard at his study, and _______, he passed the exam easily.
She has worked in this factory ______ she came here in 2010.
-I’m afraid the meeting has begun. -Don’t worry. It ___ until the bell ____.
In summer milk will quickly go bad _____it is put into a fridge.
I have heard a lot of good things about you _____ I came back from abroad.
—Why didn't you try your best to get on the bus?—I tried to, but it had started moving ________ I could get on it.