Ⅱ、单项选择题
_____ boy as he is, he can take care of himself and leads _____ complete independent life.
| A．A; a | B．A; / | C．The; the | D．/; a |
I'm glad to see that you __________ a lot of progress since I__________ you last.
| A．will make; have met | B．have been making; met |
| C．had made; met | D．have made; meeting |
—Did you find the missing couple in the mountain yesterday?
—No, but we __________ to get in touch with them ever since.
| A．have tried | B．have been trying | C．had tried | D．had been trying |
__________ my sister three times today but her line was always busy every time I phoned her then.
| A．I'd phoned | B．I've been phoning | C．I've phoned | D．I was phoning |
She ought to stop working, she has a headache because she __________ too long.
| A．has been reading | B．had read | C．is reading | D．read |
I __________ for five minutes, why don't they come?
| A．am waiting | B．waited | C．was waiting | D．have been waiting |