It sounds like something is wrong with the car ’s engine. , we ’d better take it to the garage immediately.

---I left my handbag on the train, but luckily someone gave it to a railway official.

---How unbelievable to get it back! I mean, someone ______ it.

Between the two parts of the concert is an interval, __________ the audience can buy ice-cream.

---You could always put the decision off a little bit longer.

---_____ If I leave it much longer I might miss my chance.

In that school, English is compulsory for all students, but French and Russian are _________.

It was never clear _______ the man hadn ’t reported the accident sooner

Teachers have to constantly update their knowledge in order to maintain their professional ___.

--- Are you still mad at her?

---Not really, but I can’t ______ that her remarks hurt me.

马克思主义的产生具有深刻的社会根源、阶级基础和思想渊源，其创始人马克思1818年5月5日出生在德国特利尔城的一个律师家庭，恩格斯1820年11月28日出生在德国巴门市的一个工厂主家庭，他们放弃了舒适安逸的生活，毅然选样了充满荆棘坎坷的革命道路，创立了科学社会主义，马克思、恩格斯之所以能够创立科学社会主义，主要是因为()。

实行人民民主，保证人民当家作主，实现形式是丰富多样的，经过长期探索，我国在通过依法选举让人民的代表来参与国家生活和社会生活管理的同时，找到了一种保证人民在日常政治生活中油广泛持续深入参加权力的特有民主形式，这一特有民主形式是()。