—Did you enjoy your holiday?

—Yes．it's the best holiday I         these years．

A．had

B．would have

C．had had

D．have had

由于城市需占有较大地域，且为了便于城市建设与运营，多数选址在()或低丘山冈、盆地等地方。

A．平原、湖泊

B．平原、丘陵

C．平原、河谷

D．丘陵、海边