Sam，let's go to the cinema． There's a new movie called Avengers Ⅲ（《复仇者联盟3》）．
Not now． I my brother David with his English．（ ）
A．helpB．helped
C．am helpingD．have helped
Sam，let's go to the cinema． There's a new movie called Avengers Ⅲ（《复仇者联盟3》）．
Not now． I my brother David with his English．（ ）
A．helpB．helped
C．am helpingD．have helped
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