I am not sure whether New York is ____ biggest city in____world or not.

同学们都在忙着准备考试。

足球是一项培养孩子跟别人合作的运动。

汤姆每天下午打篮球。

你应该听老师的话。

Hopefully these types of gyms will successfully grow in numbers in the future.

请带把雨伞以防下雨。

No one claimed responsibility.

The team paid him only $15 a week.

They often use text messages to stay in touch with customers.

He was healthy and strong, but he had very little formal education.