1。They had to stay at home because of the heavy rain. 　　The heavy rain ___________ him ___________ at home. 2。The recitation was a bit boring, so I didn’t win any prize. 　　The recitation was ___________ ___________ boring, so I didn’t win any prize　3。We didn’t laugh at him but help him up.　　___________ ___________ laughing at him, we helped him up.