The teacher was very pleased_______ Tony’s answer.

We spent three hours waiting in the rain _____ your coming late again— I am sorry[ ]

(2013·浙江，8)Eye doctors recommend that a child’s first eye exam ________ at the age of six months old.

When I have problems I often ask my father .

Do you like the city of Nanjing—Yes. It’s__________time to visit Nanjing. And every time I am here ,I find something exciting.