It was never clear _____ the man hadn't reported the accident sooner．
| A．that | B．what | C．when | D．why |
12. _____________in a white uniform, he looks more like a cook than a doctor.
| A．Dressed | B．to dress | C．Dressing | D．Having dressed |
11. When_____________help, one often says “Thank you.” Or “It’s kind of you.”
| A．offering | B．to offer | C．be offered | D．Offered |
10. Both the concerts will be broadcast ________in a minute.
| A．live | B．alive | C．living | D．Lively |
9. He made a speech at the conference, _____ folk music.
| A．hearing from | B．thinking of | C．carrying on | D．dealing with |
8. I’m going to get___________this afternoon.
| A．these letters mailing | B．mail the letters |
| C． to mail these letters | D．him to mail the letters |