I don’t know if it tomorrow. If it ，we won’t go hiking.

Did that book give the information you needed?— Yes, but ______, we had to read it almost entirely.[ ]

The engine of the ship was out of order and the bad weather ______ the helplessness of the crew at sea.

_____ is no hope that he can recover from such a serious injury. [ ]

Taobao.com is a free site, _________ visitors can not just purchase almost all kinds of products but open their own online shops.