The boys were seen ___model ships in the room when someone rang the bell.我觉得填to make 也对啊 为什么非要用making呢

The missing boys were last seen _____ near the river.为什么填playing “ing”形式? Some boys were seen ————(play)football on the playground yesterday Were were the boys( )那时 Where are the boys?They _basketball over there just now.A were seen play B were seen to play请给出原因 The missing boys were last seen playing near the river这里为什么用missing 和playing The missing boys were last seen playing near the river这里为什么用missing 和playing 而不用misse和play? ( _),the boys were shouting ahd singing .A:Happily and excitedily B:Happy and excited 更正下面句子的错误,每题仅有一处错误 The police were told that some boys were seen play on thestreet The boys were seen ___model ships in the room when someone rang the bell.我觉得填to make 也对啊 为什么非要用making呢 the missing boys were last seen ____near the river A.playing B.play C.played D.to play但是see的被动语态不是 see sb to do .. the missing boys were last seen 空格 near the river; a:playing ; b:to be playing,我这儿的答案是b, The ____ boys were last seen ______ near the West Lake.A.missing ; play B.missed; played C.missed ; to play D.missing; playing ( _),the boys were shouting ahd singing . A:Happily and excitedily B:Happy and excitedhappily是副词吗 1.I didn't _ (notice) you were going to leave.2.The young man ran away quickly and _ (could no longer be seen) in the crow. they were seen to come out of the housewere seen the boys like _(make)model ships. A:Look at the boys!Are they going canping?B:_,_ _.They are_ _. the missing boys were last seen ()near the river.为什么不能选to play呢?这个不是小男孩被看到做某事吗?为什么不能选to play呢?求讲解 为什么要用playing?The missing boys were last seen (playing )near the river.A.playing B.to be playing C.play D.to play 其它答案为什么不能用?