I can’t go to the New Year’s concert,_____,100 dollars is just too much for me to spend in one evening.

Although my ideas, he didn’t come up with his own.

How do you feel your travel to Hainan?—________，I enjoyed it very much，although the weather of some days was unpleasant.[ ]

You may depend on ____ that they are of muchvalue.

The problem was raised ________ we shouldget all the machines________.