Staying in hospital and taking special medicines ________ drug users an opportunity to stay away from drugs, which is________ the key to breaking the addiction to drugs lies.
The secretary worked late into the night, _____ a long speech for the president.
The train was ______ to arrive at 11:30,but it was an hour late.
I have been keeping the portrait _____ I can see it every day, as it always reminds me of my childhood in Paris.
Because he ________ the secret, his friend became very angry.
People like to eat sweet dumplings on the Eastern Festival,which ____ in hot water.