【題目】He always keeps an eye on shortcomings of his brother’s _________ refusing to admit his own mistakes.

【題目】In that school, English is compulsory for all students, but French and Russian are _______.

【題目】It's great that all the visitors who on the island were saved.

【題目】Teachers have to constantly update their knowledge in order to maintain their professional ________．

【題目】What shall we use for power when all the oil in the world has been _____？

【題目】She ________ Japanese when she was in Japan. Now she can speak it freely.

【題目】—OK， here ___________.

【題目】 suddenly occurred to me that I had misunderstood him and I thought I should explain it to him.

【題目】Since the school in Britain starts around 9:00 a.m. and ends about 3:30 p.m., means I could get up an hour later than usual.

【題目】He believed that these creatures are linked to a common ancestor. that lived in Asia some 300,000 years ago.