用所给词的适当形式完成句子。(5分)
You must practice_______ (speak) English as often as possible.
It’s very important for us_______ (make) plans before a new term.
Wang Hui offered______ (help) his mother to do the housework last Sunday.
We all know the Changjiang River is the______ (long) river in China.
The children are very____(interest) in the movie Despicable Me 2(《神偷奶爸2》).