.It was in the 1990s _______ we were working together ____ we made friends with each other.

These plastic flowers look so ________ that many people think they are real.[ ]

It’s not always necessary to look up the words________ the dictionary while reading. Sometimes we need to guess.

Are you good ________ children—Yes, I think I can help them ________ homework.

依次填入下列各句横线上的词语，正确的一项是 (　　)(1)当然不能听任这种富于欺骗性的见解到处________而不加驳斥。(2)1848年1月底，马克思收到伦敦中央委员会发来的一封带有警告意味的________书，要他尽快把草稿送去，“否则将对他采取进一步措施”。(3)正如弗里德里希·恩格斯后来所说——“还远没有成熟到可以________资本主义生产方式的程度”。