_____ smart the driverless car is! I really want to have one.
本题考查感叹句的结构。句意:这个无人驾驶汽车真的太智能了! 我真的想要拥有一辆。感叹形容词smart要用how。
It's very kind _____ you to lend me your reusable shopping bags.
句意“你把你的可重复使用的购物袋借给了我,你真是太好了。”根据“It's +adj. + of sb. + to do sth.”的句式可知答案为A。
A stupid man tells a woman to shut up,while a wise man tells her that her mouth is quite beautiful _____ it is closed.
句意:愚蠢的男人告诉女人闭嘴,而聪明的男人会告诉她,在她闭着嘴的时候,她的嘴相当漂亮。本题考查连词的用法。unless 除非;since 既然,自从;when 当……的时候;though 虽然。根据句意可知答案为C。