My father has a habit of jogging ___________ the river in front of my house for an hour in the morning.

Catherine telephoned to the airport to ______ whether Flight 24 for San Francisco is departing on time.[ ]

Do you know Jim quarreled with his brother?-I don’t know,______. [ ]

xperts agree that human activities such asthe clearing of large areas of forests, and farming on a large scale _________the problem of global warming

We are informed that the Weifang International Kite Festival starts at 7:00 —Oh, I didn’t expect it was so early! I ____ to go out for dinner with my friends first