There was nothing they could do______.
| A．but wait | B．except waiting |
| C．only to wait | D．unless they waited |
13． a reply，he decided to write again.
| A．Not receiving | B．Receiving not |
| C．Not having received | D．Having not received |
There will be a discussion tomorrow,all those who want to,please raise your hands.
| A．join | B．take part | C．take a part | D．take part in |
——What do you think of the book?
——Oh,excellent.It’s wortha second time.
| A．to read | B．to be read | C．reading | D．being read |
My father will notus to drive his new car.
| A．agree | B．allow | C．have | D．let |
The foreigner explained again and again but he still couldn’t make himself.
| A．understand | B．understood | C．be understood | D．understanding |