It was raining hard. Little Tom felt cold, so he stood______to his mother.

—How did you find your trip to Europe?—         in my life had I felt so great. The food and the service were satisfactory.

We often say that something is “as light as air”, but air is＿＿＿light. 

As he works in a remote area, he visits his parents only _________.

I'm certain David's told you his business troubles. ______, it's no secret that he owes a lot of money to the bank.