A．knowingB．readingC．inspectingD．realizing

【C19】A．knowingB．to knowC．they knowD．known

【C20】A．they will realizeB．do they realizeC．they realizeD．will they realize

【C5】A．improvingB．refiningC．achievingD．realizing

【C18】A．stackingB．readingC．stockingD．recommending

—Will Tom recover？ —Right now there is no way______.A．of knowingB．to be knownC．for knowing

【C4】A．knowingB．knowC．knewD．known