问题

Science is _____ difficult for some students ____ learn, so many of them don’t like it.
A:was watching
B:were watching
C:watched
D:watches;
B:were watching
C:watched
D:watches;
正确答案是:
同类题型
you mind my sitting here with you”“No, ______ you aren’t too noisy”
Who are you waiting __________ the school gate, Millie
In _____room, you can see a lot of things. But some of them are not _____.
To be great, you must be smart, confident, and, _____, honest [ ]
I don’t like_______ when I am talking withmy friends someone cuts in.