二．暑期夏令营里来自中、英两国的小朋友面对下列题目各自有不同的麻烦，你来帮助他们写出合适的单词吧！（每题0.5分，共5分）
1．My mother has a bad ________(记忆力) and she often forgets things.
2. __________(游客) from different countries come to China to visit the Great Wall every year.
3. We should listen to the teachers ____________/′ke fl / in class.
4. His parents ask Simon not to go swimming by himself , but he often goes _______.
5. Don’t smoke here because there is a sign “No ________”here.
