The presidentpromised to keep all the board members _________ of how the negotiations weregoing on.

My best friend, Tom, should ______ me ______ to my boss, which hurt me deeply.

It’s reported that some wild animals werefound in a big cave in the mountain.

It is vital that every piece of equipment ________ before the experiment.

ill come to attend your lecture at 10：00 tomorrow.—— I’m sorry, by then my lecture will haveended and I＿＿＿myguests in my office.