【推荐1】—English has a large vocabulary, hasn’t it?
—Yes. _______ (know) more words and expressions and you will find it easier to read and communicate. (所给词的适当形式填空)

【推荐2】(天津卷) She was anxious _________ (know) what had happened. (所给词的适当形式填空)

【推荐3】His not________ (know) how to help the people trapped in the snowstorm made him worried. (所给词的适当形式填空）

【推荐1】Selecting a mobile phone for personal use ________ (be) no easy task because technology is changing so rapidly. (所给词的适当形式填空)

【推荐2】In China, the compass ________(date) back thousands of years. （所给词的适当形式填空）

【推荐3】The young man ______ (volunteer) to help the children in a primary school learn English two days a week. (所给词的适当形式填空)

【推荐1】Either Tom or you ________ (be) wrong. (所给词的适当形式填空)

【推荐2】Not only Tom but also his parents ________ (be) fond of watching football matches. (用所给词的适当形式填空）

【推荐3】Not only I but also my friend ________________ (gain) a glimpse into the two splendid civilizations so far. (所给词的适当形式填空)