问题
Chatting online can be _____fun, but kids must be sure they stay safe on _____web.
A:不填; the
B:a; the
C:不填; a
D:a; a;
B:a; the
C:不填; a
D:a; a;
正确答案是：
同类题型
What of noodles would you like –Beef and tomato noodles，please．
In China it is a custom to give kids lucky money, _______ during the Spring Festival.
You are saying that everyone should be equal, and this is _____ I disagree. [ ]
_________ is your home from your school –It is onlyfifteen minutes by bike.