There is a new problem________in the popularity ofprivate cars that road conditions need improving.

Did you have a sound sleep last night-Yes, never sleep ______.

下列诗句都出自王维作品，都属于山水田园诗的一项是（ ）①泉声咽危石，日色冷青松。②草枯鹰眼疾，雪尽马蹄轻。③渡头馀落日，墟里上孤烟。④大漠孤烟直，长河落日圆。⑤深林人不知，明月来相照。⑥来日绮窗前，寒梅著花未⑦明月松间照，清泉石上流。⑧江流天地外，山色有无中。

____his surprise, he passed the exam.

The old lady insists on walking for an hour in the countryside every morning _____on rainy day[ ]