He had ever climbed this mountain several months before, but ________ he couldn’t find the way this time.

The weather was bad and the food was terrible , ___the holiday was very disappointing .

 We used to see each other ________，but I haven't heard from him since last year.(2012·辽宁)

 -Do you think an advertisement is a help when you look for a job? -Well, it depends. __, it give me a chance to try.

The new machine, as is reported in the local newspaper, will work twice as fast, _____ greatly reducing costs.