Good heavens!There you are!We were anxious about you,and we __ you back throughout the nightwere expecting是吗?are expecting不妥,而且这里有and 所以我也不可以非谓语.

Good heavens!There you are!We were anxious about you,and we __ you back throughout the night
were expecting是吗?
are expecting不妥,而且这里有and 所以我也不可以非谓语.

对的.说的完全正确.
1.were expecting表示过去的某一个时间一直在做.,和前面的时态相呼应.
2.and是并列句的标志,所以后面也必须是个句子（即具有主谓结构.）

对，be doing表示一直期盼做某事，也因为是and连接，所以时态要保持一致。