1.Children under 12 must be ________by adults when going to public libraries in Britain.

2.I couldn’t ________ the temptation of chocolates when travelling in Germany because they were too delicious.

3.The doctors tried every possible means to ________ the serious illness of the patient.

4.What we learn at the university is of great ________ to us in the future.

5.He never ceased to ________ after his dream in his vigorous youth.