be afraid/ready/able/sure to do造句

be afraid/ready/able/sure to do造句 be ready to do造句 用be ready to do sth.造句 用be able to do sth造句 怎样用be able to do造句? 用Be sure to、Be sure to do 、Be sure of、Be sure that 造句 be afraid to do sth 造句 用be afraid to do sth造句 be able to造句 be afraid to do sth 造句,造句要注中文 be afraid to do sth 造句,造句要注中文! sure造句用surely造一句用be sure to do sth造两句用be sure （where what ho