请根据句意及汉语提示,写出所缺单词。 小题1:It is _______________(不可能的)to finish reading the book in two days. 小题2:(妻子)_________________and husbands should look after each other well. 小题3:We must try our best to protect the ________________(环境). 小题4:We’ve learned a lot about HongKong’s past and ________________(现在). |