根据中文原文完成下列各英语译文。

1．下周我们是否去郊游得视天气而定。

   Whether we will go for an outing next week _________ _________ the weather．

2．我们没有必要每次碰到生词就查字典。

   There is no necessary for us to refer to the dictionary every time we _________ _________ a new word． 

3．即使再次失败， 你也不要放弃。

 Don’t give up _________ _________ you may fail again．

4．他看上去很粗心，可事实上他是个很细心的人。

   He appears careless, but___________ _____________, he is a very careful person．

5．万圣节时，孩子们可以对那些拒绝给他们糖果的邻居搞恶作剧。

   On Halloween, children can __________ __________on neighbours who refuse to offer them sweets.