下列选项中加横线词语解释不正确的一项是（ ）

What were you doing at 9 o’clock last Sunday morning–I ________.

What are you reading about—It’s about the one-child policy. It says that the policy has_____controlling the population in China.

Johnny ran very fast _________he could catch theearly bus.

Shall we take a taxi there since time is limited– ________. It should be hard to get one during the rush hour.