Not a single word_______ when _______about his late mother.
| A．he said, asked | B．did he say, asked |
| C．he said, asking | D．did he say, asking |
25. Time _____, I will go there with you.
| A．permits | B．permitted | C．will permit | D．Permitting |
24. _____ any biscuits that morning, we had nothing to eat.
| A．Not baking | B．Not having baked |
| C．Not being baked | D．Not having been baked |
23.— It’s a long time _____ I saw you last.
— Yes, and what a pity! It will be a long time ____ we see each other again.
| A．before, since | B．since, before | C．when, when | D．since, when |
22.______ in natural gas and oil, so this area is worth developing.
| A．Being rich | B．It is rich | C．It being rich | D．To be rich |
21.Here’s one of the best ways to protect your skin—_____ too much sunshine.
| A．not to absorb | B．not having absorbed |
| C．having not absorbed | D．don’t absorb |