请高手帮忙！看看以下问题选什么 为什么？谢谢！！！

Question

1，every minute is made full use of__our lesson.
A to study B studying C studied D being studied
2, They found the lecture hard__.
A to understand B to be understood
3. The harder we study, the more questions we think of__
A asking B being asked C to ask D asked
4,The little girl enjoys nothing but__on the Internet
A to chat B chat C chatting D be chatting
5,What do you enjoy__your weekends,fishing or watching TV.
A spending Bto spend C having spent D to have spent
6, __to somebody, an English often shakes hands with the stranger
A On being introduced B To be introduced C Introducing D To introduce

Answer 1

1.A 因为此话译为：每分钟都被充分用于学英语，应用动词不定式
2.B 此话应理解为：他们发现这个讲座很难(被)理解.。应用不定式的被动语态作宾补
3.C 这句话的意思是：我们学习越努力，我们就想出越多要问的问题。这里用动词不定式作后置定语，修饰questions.
4.C 此句话的意思是：这个小女孩除了喜欢上网聊天外，什么都不喜欢。根据enjoy doing sth.故选C。
5.B 选项前虽然有enjoy ,但不选A，因为这句话的意思是：你喜欢怎么来度过你的周末，钓鱼还是看电视？
6.A 此句是一个独立主格结构，主语是 an English， 前面的独立主格结构和它存在被动关系，此句应理解为：当一个英国人被介绍给某人时，他经常和这个陌生人握手。