简答题4.Tearing the curtains apart, there was no one hiding there.简答题15.To save money enough to afford her daughter's education, her house has been sold out.简答题14.Looking out of the window of our hotel room, there are lots of mountains in sight.简答题7.Sitting under an apple tree one night, an idea came to Newton.简答题8.To swim properly, a course of instruction is necessary.简答题1.While cleaning his gun, it went off unexpectedly.简答题13.By installing a birdbath, the birds were given a source of water．简答题11.Looking up at the sky, the sun went under a cloud．简答题9.When a small boy, his parents were very strict with him.简答题5.Getting here on time, but there were hardly any guests left.简答题12.While climbing the hill, the rain began to fall．简答题10.Being a holiday, children are going to have a picnic.简答题2.Approaching the woods, a cabin will come into your sight.简答题3.After looking out the window for hours, the rain passed.简答题6.Shouting loudly, the hills resounded.