______ you in America in 1999?—Yes, I ____________.

_______ one and a half months enough for the project to be finished?—I am afraid not. The professor is ill and only after he recovers ________ go on with it.

Wushu is becoming more and more popular _____ foreigners. [ ]

This morning, when I walked by, I saw many children ____ in the park.

Do you know the girl in the white dress? —-Yes, she’s ____ university student. She always takes _____ umbrella with her.