用括号中所给词的适当形式填空。

1. It is our duty              (keep) our classroom clean.

2. Don't worry. There               (be) plenty of time.

3. The students'               (pronounce) isn't good, but it's improving.

4. John is worried about the coming               (final) exam.

5. There must be something              (visit) my home.

吴某将孙某以侮辱罪告上法院。在法院宣判前，吴某和孙某表示愿意接受法院的调解。对此，法院的下列做法中，符合法律规定的有()

A．吴某和孙某达成调解协议后，法院无须再制作调解书

B．法院的调解书一经作出，即发生法律效力

C．因吴某拒收调解书，法院立即对该案作出判决

D．吴某和孙某先后签收了调解书，调解书自孙某签收时发生法律效力