根据汉语意思完成句子。(10分,每空一分)
当他长大的时候他想打一个科学家。
He wants to be a scientist when he _________ _________.
我不同意你的观点。
I ________ _________ you.
请把桌子上盖上一块布。
Please ________ the table ________ a piece of cloth.
昨天这座楼突然倒塌，死了很多人。
The building _______ ________ yesterday and many people died.
在大街上踢足球是很危险的。
________ _________ to play football in the street.