was expecting her favourite singers,but to her disappointment, _______ appeared.

o his research work, the professorcared little about any other things

Starting your own business could be a way to achieving financial independence.___; it could just put you in debt.

Everyday the mother seems to be busy until 10o’clock at night,____the rest of the Family have fallen asleep.

Where is Bob? I cannot find him anywhere.— He ________ have been off long. I heard him make a call just now.[ ]