1.he is too___（luck)to pass his chinese exam.2,it is harmful to drink__(pollute)water.
问题描述：
1.he is too___（luck)to pass his chinese exam.2,it is harmful to drink__(pollute)water.
3,___(be)relaxd,and you will do it successfully.
4,the boy ___(lie)on the grass __(lie)there for 2 hours so far.
答
1.lucky
2.polluted
3.Having been
4.lying has lain