问题

Is_______ necessary to learn anotherlanguage? — I think so.
A: this
B:that
C:it
D:he
B:that
C:it
D:he
正确答案是:
同类题型
This dictionary is_______ to my translation, but that one is________
The book must . She’s the only one who’s studying French.
Mother was worried because little Alice was ill, especially_______ Father was away in Canada.
Need I accomplish all we have set out to do?—Yes, you ____; otherwise you ____fired.
.Some people say more but do less ______ others do the opposite