may

汤姆昨天可能没来开会；他身体不舒服。

Tom ___may not have attended the meeting yesterday; he wasn't feeling well.

我们不妨开始会议——其他人很快就到。

We ___may as well start the meeting - the others will be here soon.

如果商店关门了，我们不妨回家。

If the shops are closed, we ___may as well go home.

既然你已经完成了报告，你不妨现在就提交。

Since you've finished the report, you ___may as well submit it now.