1.I hear the earth _______(be) round.
问题描述：
1.I hear the earth _______(be) round.
2.We'll try _______( not tell ) him the bad news.
3.My mother______cooking half an hour ago.
A.busy B.kept busy C keep busy D keeping
4.Mary people lost their ________(life) in the traffic accdient
答
is;
not to tell;