David suddenly felt nervous. ___________, it was his first time to go on stage.[ ]

Do you know where Mr Brown is?—He _______ Beijing for two days.

That was the first time I _______ there and I was impressed by the friendly people very much

The life we were used to __________ greatly since 1992.

Ordinary woman though she is, she had won the award because she tries every means to make people _________ of the importance of the environment conservation.