【C9】A．againB．behindC．afterD．next

I believe you have ______ some important points in the report.A．left aloneB．left behindC．l

【C5】A．untilB．onceC．afterD．since

【39】A．forB．inC．afterD．before

The plan fell_____for it proved to be too costly.A．offB．behindC．downD．out

【C15】A．AgainB．LaterC．FrequentlyD．Now

【C6】A．againB．thusC．repeatedlyD．yet