_____ it rain tomorrow, we would have to put off the visit to the Yangpu Bridge.
Since the time humankind started gardening, we _____to make our environment more beautiful.
There is no greater pleasure than lying on my back in the middle of the grassland, _____at the night sky.
You will never gain success________ you are fully devoted to your work.
— I’ve prepared all kinds of food for the picnic. —Do you mean we_____ bring anything with us?
As John Lennon once said,life is_____ happens to you while you are busy making other plans.