If you have never planted anything, you won’t be able to know the pleasure of watching the thing you have planted ____.
二.单项选择: 1.It is hard to imagine smells _____ when a film is shown in the future.
( ) 30. They say your report doesn’t ______ the fact. But I don’t ______ them _____ this point.
( ) 29. In such dry weather, the flowers will have to be watered if they _________.
( ) 28. Things fall to the ground _______ go up into the air because of gravity.
( ) 27. Take _______ half, they’re exactly the same.