用下列所给的动词的适当形式填空1.Listen!The girls (sing)in the next room2.Tom is practicing (speak)Eiglish at the moment请说明为甚麽

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用下列所给的动词的适当形式填空1.Listen!The girls (sing)in the next room2.Tom is practicing (speak)Eiglish at the moment请说明为甚麽

用下列所给的动词的适当形式填空1.Listen!The girls (sing)in the next room2.Tom is practicing (speak)Eiglish at the moment请说明为甚麽
用下列所给的动词的适当形式填空
1.Listen!The girls (sing)in the next room
2.Tom is practicing (speak)Eiglish at the moment
请说明为甚麽

用下列所给的动词的适当形式填空1.Listen!The girls (sing)in the next room2.Tom is practicing (speak)Eiglish at the moment请说明为甚麽
1.are singing.
Listen 是现在进行时的标志词,所以句子应该用现在进行时态,be+doing.句子的主语girls是第三人称复数,be动词用are.
2.speaking
practice doing sth.