用所给词的适当形式填空。
【小题1】I listened to a CD ______(call) HeartStrings.
【小题2】We were playing volleyball on the beach when it began to rain _______(sudden)．
【小题3】Can you hear someone_________(sing) Beijing Opera every morning?
【小题4】Go ________(cross) the bridge, then you can see the store on your right.
【小题5】My mother said it's very important for me _________(sleep) well.