第一节 单项填空(共15小题；每小题1分，满分15分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21．—You must have had a good time at the party last night，didn’t you?,
— ．Actually，it was a bit boring．
A．Oh，great B．I suppose so
C．Not really D．That’s OK
22．Brussels，the capital city of Belgium，is home to the European Union． organization of European nations．
A．不填；a．n B．a；the C．a；an D．不填；the
