根据汉语意思完成句子。
数学老师胳膊底下夹着尺子在到处走动。
The math teacher was walking up and down         a ruler under his arm.
我们应该阻止他们在这儿踢足球。
We must _______ them _______ playing football here.
如果你不吃快餐，你就会感到健康多了。
If you stop _________ _______ food, you’ll feel _________
老师一再叫我们要多锻炼。
The teacher tells us _______ _______ more exercise ______ and _______.
他头疼，
He’s got _________ __________.