I _______ have been more than six years old when the accident happened．
| A．shouldn’t | B．couldn’t | C．mustn’t | D．needn’t |
He has been in high spirits, for pieces of exciting news came to him_________.
| A．one after another | B．one by one | C．little by little | D．step by step |
He arrived home very late last night, _________in the early hours this morning.
| A．or else | B．or rather | C．rather than | D．more than |
Lisa is completely_________and receives no money from her family.
| A．conscious | B．confident | C．independent | D．sensitive |
．The young man was driving his new car, bought only three days ago, in the_________of the airport, when an accident happened.
| A．way | B．path | C．route | D．direction |
．John had tried to find a job in the sales department, but he had no_________.
| A．chance | B．time | C．quality | D．luck |