How old are you? —I’m fifteen. I was born_____1990. [ ]

So difficult _____ it to adjust to an English-speaking environment that he determined to learn English hard.

OK, I’ll do it _______ .[ ]

_____________ does your cat weigh?— About 5 kilograms.

Congratulations ! Let’s cheer for the 17-year-old boy Han Tianyu. He did very well at the Sochi Winter Olympics.—We all felt __________him.