--- Lily is ill in hospital .---Really ? I _____ know she was ill .
—What about this pink skirt, madam?—This one is really beautiful. I will buy it ________it's a little expensive.
I’m sorry I’m late again________ the heavy rain.
______ regular exercise is very important, it’s not a good idea to exercise too close to bedtime.
The box is ________ heavy ________ I can’t lift it.
We're not sure if it _______ tomorrow. If it _______, we won't go hiking.