You _____ her in her office last Friday, she’s been out of town for two weeks.

It is important to know about the cultural differences that        cause problems.

When we worked in the same office，we _______ often have coffee together.

It was dark when Mary went out. I wonder how she ______ through the black lane by herself.

 -- Must I come here at eight o’clock?                                           -No, you ____. You may come a little later.