根据句意用所给单词的适当形式填空。
The Disney film Frozen is a wonderful film that is worth_________(see) several times.
He will write to me as soon as he (get) to Beijing.
I think teaching children in this way _______________ (simple) means making them stressed.
It’s very important to teach young children about road (safe).
Have the students ___________ (copy) all the words on the blackboard?