一、根据句意及汉语提示完成单词
1．I believe you will ________ (成功) if you don't give up.
2．The river is very ________(深的)．Don't swim in it.
3．The ice was not ________(厚的) enough for us to walk on.
4．My math teacher drew a ________(正方形)on the blackboard.
5．Not everyone can swim with fish in the________(海洋)．
