选A
It was __because he was ill ____ that he did not go to Mount Lao with us.
正是因为他病了,所以他才没和我们一起去崂山.
能够接在be动词后面的,又可以放在句首的,大概就只有because了.
其他三个都不能跟在be动词后..只能放在句首..
选A
It was __because he was ill ____ that he did not go to Mount Lao with us.
正是因为他病了,所以他才没和我们一起去崂山.
能够接在be动词后面的,又可以放在句首的,大概就只有because了.
其他三个都不能跟在be动词后..只能放在句首..