用括号中动词的适当形式填空
1. I _____ (not visit) Shanghai World Expo last summer.
2. — ______ Nancy____ (go) to New York City last weekend?
—Yes, she____ (go) there with her parents.
3. —What ______ you ______ (buy) in Beijing?
—I ______ (buy) nothing.
4. —How ______ (be) the beaches there?
—Beautiful.
5. Last Sunday we had great fun ______ (swim) in the lake.