I called you yesterday but no one answered.— Well, Maybe I in the garden at that time.

If nobody ____ the traffic rule, the Chinese style of crossing the road ____.

Why do you ____ very happy this afternoon?—Because we are going to spend the evening at Lily’s house.

Could you tell me ________? – In August, 2014.

The boy __________ his friends was playing in the street when the earthquake happened.[ ]