【推荐1】对露西来说保持工作和家庭生活的平衡是件难事, 所以她只好向她妈妈求助。(it作形式主语)
________________ her work and family life, so she has to turn to her mother for help.

【推荐3】A: With more and more trees cut down, ________(自然平衡) has been damaged,   which has caused many wild animals and plants ________(处于濒临灭绝的危险中).
B: I can’t agree more. It’s high time that we ________(唤起人们保护野生动物的意识).

【推荐3】这支军队训练有素，装备精良，击败敌人几乎没有困难。
The army was well-trained and well-armed, and had little difficulty ________. (defeat vt.)

【推荐2】不是我的姐妹们就是我的妈妈要来。
Either my sisters or my mother   ________ ________.