When he，he couldn’t, for a moment, recognize his surroundings.

My son is _____ to be seen. Where has he gone? — I think he _____ in the building.

Is it the first time you _______ Beijing?—-No But the first time I ______ here, the city wasn’t so beautiful

The doctor said that the old man’s condition was _____ and that they had tried their best. [ ]

英文缩写“L”的含义是衣服的____________.