1.can you see ()?A something unusual B unusual something C u

1.can you see ()?A something unusual B unusual something C unusual anything D anything unusual
2.his cousin had his lunch at the factory.请问have lunch中间能加物主代词吗?不是只能加形容词的吗比如：have a big breakfast
3.i didn't know what ()just now.另主从句时态要保持一致吗
A happens to him B happened to he C happened to him,C is happening to him
4.The students ()shopping a moment ago.
A go B goes C went D going 另请问a moment ago.